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December

Niteroi Weather in December with Sea Temperature

December weather in Niteroi includes average daytime air +29°C, nighttime +22°C, average sea temperature +25°C. Daily water temperatures usually range from +23°C to +27°C, which is comfortable for swimming and beach planning. The tables below also show air temperature, wind, rain and humidity; for near-term water data, open the current 30-day water temperature forecast.

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Averaged values across several years

Daily air temperature for the month

Day Night

Daily sea water temperature for the month

Water

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December	Day	Night	Sea t°	Wind	Precip	Humidity
1Mon	+28°C	+22°C	+25°C	2 m/s	0.5 mm	83%
2Tue	+29°C	+22°C	+25°C	2 m/s	1.9 mm	82%
3Wed	+28°C	+22°C	+25°C	2 m/s	1.2 mm	81%
4Thu	+28°C	+22°C	+25°C	2 m/s	1.4 mm	82%
5Fri	+28°C	+22°C	+25°C	2 m/s	0.4 mm	81%
6Sat	+27°C	+21°C	+25°C	2 m/s	1.6 mm	84%
7Sun	+28°C	+22°C	+25°C	2 m/s	2 mm	77%
8Mon	+28°C	+22°C	+25°C	2 m/s	1.8 mm	81%
9Tue	+28°C	+21°C	+26°C	2 m/s	1 mm	81%
10Wed	+28°C	+22°C	+24°C	2 m/s	0.7 mm	82%
11Thu	+29°C	+22°C	+23°C	2 m/s	0.7 mm	81%
12Fri	+30°C	+22°C	+24°C	2 m/s	0.9 mm	81%
13Sat	+28°C	+22°C	+24°C	2 m/s	0.6 mm	81%
14Sun	+28°C	+22°C	+25°C	2 m/s	0.3 mm	81%
15Mon	+31°C	+23°C	+27°C	2 m/s	0.2 mm	77%
16Tue	+31°C	+23°C	+27°C	2 m/s	0.9 mm	75%
17Wed	+28°C	+23°C	+26°C	2 m/s	1.1 mm	80%
18Thu	+27°C	+22°C	+26°C	2 m/s	1.3 mm	81%
19Fri	+27°C	+22°C	+24°C	3 m/s	0.3 mm	83%
20Sat	+28°C	+22°C	+24°C	2 m/s	0.5 mm	82%
21Sun	+29°C	+22°C	+24°C	3 m/s	0.7 mm	80%
22Mon	+30°C	+22°C	+25°C	2 m/s	0.5 mm	79%
23Tue	+27°C	+22°C	+25°C	3 m/s	3.2 mm	82%
24Wed	+28°C	+22°C	+24°C	2 m/s	1.3 mm	80%
25Thu	+29°C	+22°C	+24°C	2 m/s	0.1 mm	79%
26Fri	+30°C	+22°C	+24°C	2 m/s	1.3 mm	77%
27Sat	+29°C	+23°C	+24°C	2 m/s	1.3 mm	80%
28Sun	+30°C	+22°C	+25°C	2 m/s	0.8 mm	77%
29Mon	+30°C	+23°C	+26°C	2 m/s	0.7 mm	78%
30Tue	+28°C	+23°C	+27°C	2 m/s	2.2 mm	83%
31Wed	+28°C	+23°C	+27°C	2 m/s	1.9 mm	84%

Sea water temperature by months

Water +25°C

Day and night air temperature

Day +29°C Night +22°C

Weather highs and lows in Niteroi for december

Warmest day: 16 december, +31°C
Coldest night: 9 december, +21°C
Max precipitation: 23 december, 3.2 mm
Warmest sea water: 15 december, +27°C
Coldest sea water: 11 december, +23°C

Climate in Niteroi in december

Average daytime temperature: +29°C
Average nighttime temperature: +22°C
Sea water temperature: —
Precipitation (monthly average): 33.6 mm
Days with precipitation: 8.4
Humidity: 81%
Wind: 2 m/s
Data: 7 years / coverage 100%

Daily air temperature for the month

Day Night

Daily sea water temperature for the month

Water

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December	Day	Night	Sea t°	Wind	Precip	Humidity
1Mon	+30°C	+20°C	+25°C	3-5 m/s, SE	0.7 mm	76%
2Tue	+31°C	+21°C	+25°C	2-4 m/s, SSW	3 mm	84%
3Wed	+28°C	+22°C	+25°C	2-4 m/s, SSW	1.1 mm	85%
4Thu	+25°C	+22°C	+25°C	2-4 m/s, SSW	0.9 mm	84%
5Fri	+26°C	+19°C	+25°C	3-4 m/s, SW	0.2 mm	73%
6Sat	+29°C	+19°C	+25°C	4-6 m/s, SSE	0 mm	70%
7Sun	+31°C	+21°C	+25°C	3-5 m/s, SSE	0 mm	71%
8Mon	+32°C	+22°C	+25°C	3-4 m/s, SSE	0.4 mm	74%
9Tue	+33°C	+23°C	+26°C	1-2 m/s, E	0.5 mm	74%
10Wed	+34°C	+23°C	+24°C	3-6 m/s, NNW	0.1 mm	70%
11Thu	+33°C	+24°C	+23°C	3-6 m/s, SW	0 mm	61%
12Fri	+33°C	+22°C	+24°C	2-4 m/s, SSE	0 mm	67%
13Sat	+26°C	+23°C	+24°C	2-3 m/s, W	0.6 mm	83%
14Sun	+25°C	+23°C	+25°C	3-6 m/s, NW	0.4 mm	89%
15Mon	+31°C	+24°C	+27°C	2 m/s, S	0.5 mm	77%
16Tue	+34°C	+24°C	+27°C	1-2 m/s, WSW	0.8 mm	75%
17Wed	+24°C	+21°C	+26°C	3-5 m/s, SW	1.6 mm	88%
18Thu	+23°C	+20°C	+26°C	1 m/s, ENE	0.5 mm	80%
19Fri	+25°C	+19°C	+24°C	2-4 m/s, ENE	0 mm	86%
20Sat	+27°C	+22°C	+24°C	2-3 m/s, S	0.8 mm	85%
21Sun	+30°C	+21°C	+24°C	3-4 m/s, SE	0 mm	77%
22Mon	+32°C	+20°C	+25°C	3-5 m/s, SSE	0 mm	65%
23Tue	+33°C	+22°C	+25°C	3-4 m/s, S	0 mm	64%
24Wed	+34°C	+24°C	+24°C	2 m/s, SSE	0.4 mm	61%
25Thu	+34°C	+24°C	+24°C	2-4 m/s, SSE	0 mm	62%
26Fri	+33°C	+24°C	+24°C	2-4 m/s, S	0 mm	62%
27Sat	+32°C	+24°C	+24°C	2-3 m/s, S	0 mm	67%
28Sun	+33°C	+24°C	+25°C	2-3 m/s, S	0 mm	66%
29Mon	+33°C	+24°C	+26°C	1-3 m/s, S	0.6 mm	68%
30Tue	+31°C	+24°C	+27°C	1-3 m/s, S	0.8 mm	79%
31Wed	+32°C	+23°C	+27°C	2-3 m/s, SSE	5.7 mm	87%

Weather highs and lows in Niteroi for december

Warmest day: 10 december, +34°C
Coldest night: 5 december, +19°C
Max precipitation: 31 december, 5.7 mm
Warmest water: 15 december, +27°C
Coldest water: 11 december, +23°C

Climate in Niteroi in december

Year: 2025
Average daytime temperature: +30°C
Average nighttime temperature: +22°C
Water temperature: +25°C
Precipitation (month): 19.6 mm
Days with precipitation: 4
Humidity: 75%
Wind: 2 m/s

Daily air temperature for the month

Day Night

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December	Day	Night	Sea t°	Wind	Precip	Humidity
1Sun	+28°C	+22°C	—	2-4 m/s, SSE	0.1 mm	80%
2Mon	+34°C	+22°C	—	2-4 m/s, NW	7.2 mm	73%
3Tue	+26°C	+23°C	—	2-3 m/s, SW	7.2 mm	91%
4Wed	+24°C	+22°C	—	3-4 m/s, SE	7.1 mm	98%
5Thu	+26°C	+22°C	—	2-3 m/s, W	1.3 mm	92%
6Fri	+32°C	+23°C	—	1-2 m/s, SSE	0 mm	80%
7Sat	+33°C	+23°C	—	2-3 m/s, W	0 mm	62%
8Sun	+31°C	+24°C	—	2 m/s, SSW	0 mm	76%
9Mon	+30°C	+23°C	—	2-3 m/s, SSW	0 mm	82%
10Tue	+27°C	+23°C	—	2-4 m/s, WNW	0.7 mm	91%
11Wed	+25°C	+22°C	—	3-4 m/s, S	2 mm	92%
12Thu	+26°C	+20°C	—	3-4 m/s, SE	0.2 mm	81%
13Fri	+28°C	+21°C	—	3-5 m/s, SE	0 mm	74%
14Sat	+26°C	+21°C	—	2-3 m/s, WSW	0 mm	83%
15Sun	+31°C	+23°C	—	2-4 m/s, NNW	0.6 mm	79%
16Mon	+32°C	+23°C	—	3-4 m/s, W	1.8 mm	74%
17Tue	+27°C	+23°C	—	2-3 m/s, SSW	0 mm	82%
18Wed	+27°C	+22°C	—	2-4 m/s, S	0.1 mm	80%
19Thu	+28°C	+21°C	—	3-5 m/s, SE	0.1 mm	80%
20Fri	+32°C	+22°C	—	2 m/s, NNE	0 mm	72%
21Sat	+29°C	+22°C	—	2-3 m/s, SSW	1.7 mm	85%
22Sun	+28°C	+23°C	—	1-2 m/s, SSW	1.1 mm	87%
23Mon	+26°C	+23°C	—	2-4 m/s, SSW	0.1 mm	88%
24Tue	+25°C	+23°C	—	2-4 m/s, SE	0.3 mm	90%
25Wed	+29°C	+22°C	—	1-2 m/s, SE	0 mm	86%
26Thu	+29°C	+23°C	—	1-2 m/s, NNE	0.6 mm	81%
27Fri	+25°C	+23°C	—	1-2 m/s, NNE	0.1 mm	94%
28Sat	+29°C	+23°C	—	2-3 m/s, SSW	0.4 mm	84%
29Sun	+28°C	+22°C	—	2 m/s, SSW	0.3 mm	87%
30Mon	+27°C	+22°C	—	2-3 m/s, SW	0.4 mm	89%
31Tue	+28°C	+22°C	—	2-3 m/s, SSE	1.1 mm	86%

Weather highs and lows in Niteroi for december

Warmest day: 2 december, +34°C
Coldest night: 12 december, +20°C
Max precipitation: 2 december, 7.2 mm
Warmest water: —
Coldest water: —

Climate in Niteroi in december

Year: 2024
Average daytime temperature: +28°C
Average nighttime temperature: +22°C
Water temperature: —
Precipitation (month): 34.5 mm
Days with precipitation: 9
Humidity: 83%
Wind: 2 m/s

Daily air temperature for the month

Day Night

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December	Day	Night	Sea t°	Wind	Precip	Humidity
1Fri	+29°C	+23°C	—	2-3 m/s, SSW	0 mm	82%
2Sat	+30°C	+23°C	—	2-3 m/s, SSE	0.1 mm	82%
3Sun	+30°C	+23°C	—	2-3 m/s, S	0 mm	80%
4Mon	+31°C	+24°C	—	2-3 m/s, SSW	1.7 mm	84%
5Tue	+28°C	+24°C	—	2 m/s, SSE	0.4 mm	87%
6Wed	+29°C	+23°C	—	2 m/s, WNW	0 mm	83%
7Thu	+32°C	+24°C	—	2 m/s, S	0 mm	74%
8Fri	+31°C	+24°C	—	2-3 m/s, E	1.1 mm	82%
9Sat	+24°C	+21°C	—	3-4 m/s, S	3.5 mm	92%
10Sun	+25°C	+21°C	—	3-4 m/s, E	0.1 mm	81%
11Mon	+25°C	+20°C	—	3 m/s, SW	2.2 mm	85%
12Tue	+25°C	+22°C	—	2-3 m/s, SSE	0.3 mm	84%
13Wed	+27°C	+20°C	—	3-5 m/s, SE	0 mm	78%
14Thu	+31°C	+21°C	—	2-3 m/s, S	0 mm	75%
15Fri	+32°C	+23°C	—	2-5 m/s, SSE	0 mm	71%
16Sat	+32°C	+23°C	—	3-6 m/s, SE	0 mm	69%
17Sun	+32°C	+23°C	—	3-5 m/s, ESE	0 mm	69%
18Mon	+31°C	+22°C	—	3-6 m/s, SE	0 mm	72%
19Tue	+30°C	+22°C	—	3-5 m/s, SE	0.2 mm	77%
20Wed	+29°C	+21°C	—	2-3 m/s, SSE	0.4 mm	79%
21Thu	+30°C	+21°C	—	2-4 m/s, SSE	0.1 mm	74%
22Fri	+31°C	+22°C	—	2-3 m/s, S	0 mm	77%
23Sat	+32°C	+23°C	—	2 m/s, SSE	0 mm	76%
24Sun	+32°C	+24°C	—	2-3 m/s, SW	0 mm	76%
25Mon	+34°C	+24°C	—	2-3 m/s, SE	0 mm	73%
26Tue	+32°C	+24°C	—	3-5 m/s, SW	0.5 mm	73%
27Wed	+26°C	+23°C	—	2-3 m/s, SSW	0.4 mm	76%
28Thu	+30°C	+21°C	—	2-4 m/s, ESE	0 mm	69%
29Fri	+35°C	+23°C	—	3-4 m/s, SE	0 mm	66%
30Sat	+30°C	+24°C	—	3-5 m/s, WSW	0.8 mm	78%
31Sun	+23°C	+22°C	—	2-3 m/s, E	0.3 mm	88%

Weather highs and lows in Niteroi for december

Warmest day: 29 december, +35°C
Coldest night: 11 december, +20°C
Max precipitation: 9 december, 3.5 mm
Warmest water: —
Coldest water: —

Climate in Niteroi in december

Year: 2023
Average daytime temperature: +30°C
Average nighttime temperature: +23°C
Water temperature: —
Precipitation (month): 12.1 mm
Days with precipitation: 4
Humidity: 78%
Wind: 2 m/s

Daily air temperature for the month

Day Night

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December	Day	Night	Sea t°	Wind	Precip	Humidity
1Thu	+28°C	+21°C	—	3-6 m/s, E	2.5 mm	87%
2Fri	+29°C	+23°C	—	3-5 m/s, E	2.5 mm	84%
3Sat	+29°C	+22°C	—	3-4 m/s, E	0.2 mm	78%
4Sun	+28°C	+23°C	—	3-4 m/s, E	0 mm	78%
5Mon	+28°C	+23°C	—	1-2 m/s, SSE	0 mm	81%
6Tue	+24°C	+22°C	—	1 m/s, NNE	2.2 mm	94%
7Wed	+27°C	+22°C	—	2 m/s, WSW	2.5 mm	82%
8Thu	+27°C	+21°C	—	2-3 m/s, SW	0 mm	82%
9Fri	+29°C	+20°C	—	2-3 m/s, SSE	0 mm	77%
10Sat	+31°C	+20°C	—	2-4 m/s, E	0 mm	80%
11Sun	+32°C	+23°C	—	2-3 m/s, S	0 mm	80%
12Mon	+33°C	+23°C	—	2-3 m/s, E	0 mm	86%
13Tue	+26°C	+22°C	—	3-5 m/s, WSW	1.8 mm	92%
14Wed	+25°C	+20°C	—	3-4 m/s, SSE	0 mm	77%
15Thu	+26°C	+20°C	—	3-5 m/s, E	0 mm	73%
16Fri	+30°C	+20°C	—	2 m/s, E	0.8 mm	74%
17Sat	+26°C	+22°C	—	3-4 m/s, SW	0.3 mm	84%
18Sun	+25°C	+21°C	—	3-4 m/s, SW	1.5 mm	88%
19Mon	+24°C	+21°C	—	3-4 m/s, E	0.7 mm	92%
20Tue	+21°C	+21°C	—	3-4 m/s, SE	1.6 mm	96%
21Wed	+23°C	+21°C	—	4 m/s, SW	3.1 mm	91%
22Thu	+24°C	+20°C	—	2-4 m/s, ESE	0.9 mm	87%
23Fri	+24°C	+20°C	—	3-4 m/s, E	0.2 mm	84%
24Sat	+26°C	+19°C	—	4-5 m/s, E	0 mm	82%
25Sun	+27°C	+20°C	—	3-4 m/s, ESE	0.2 mm	86%
26Mon	+30°C	+21°C	—	2 m/s, E	2 mm	80%
27Tue	+30°C	+22°C	—	2-3 m/s, E	4.6 mm	84%
28Wed	+30°C	+22°C	—	2 m/s, E	0.2 mm	83%
29Thu	+28°C	+23°C	—	2-3 m/s, SE	1.7 mm	80%
30Fri	+25°C	+22°C	—	2 m/s, S	6.7 mm	91%
31Sat	+28°C	+21°C	—	1-2 m/s, ENE	2.9 mm	87%

Weather highs and lows in Niteroi for december

Warmest day: 12 december, +33°C
Coldest night: 24 december, +19°C
Max precipitation: 30 december, 6.7 mm
Warmest water: —
Coldest water: —

Climate in Niteroi in december

Year: 2022
Average daytime temperature: +27°C
Average nighttime temperature: +21°C
Water temperature: —
Precipitation (month): 39.1 mm
Days with precipitation: 13
Humidity: 84%
Wind: 2 m/s

Daily air temperature for the month

Day Night

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December	Day	Night	Sea t°	Wind	Precip	Humidity
1Wed	+26°C	+22°C	—	2-3 m/s, WSW	0.3 mm	92%
2Thu	+26°C	+21°C	—	2-3 m/s, SW	0 mm	80%
3Fri	+24°C	+21°C	—	2-3 m/s, SSE	0.1 mm	78%
4Sat	+25°C	+19°C	—	2-4 m/s, ESE	0.1 mm	80%
5Sun	+27°C	+20°C	—	3-4 m/s, E	0.1 mm	83%
6Mon	+26°C	+21°C	—	2-3 m/s, SW	5.3 mm	89%
7Tue	+23°C	+21°C	—	2-4 m/s, S	4.3 mm	88%
8Wed	+22°C	+19°C	—	2 m/s, W	1.3 mm	89%
9Thu	+24°C	+17°C	—	3-4 m/s, W	0.1 mm	80%
10Fri	+25°C	+19°C	—	2-3 m/s, WSW	0 mm	79%
11Sat	+31°C	+20°C	—	2-3 m/s, ENE	0 mm	76%
12Sun	+34°C	+23°C	—	2-3 m/s, ENE	3 mm	73%
13Mon	+32°C	+24°C	—	2 m/s, W	1.7 mm	75%
14Tue	+29°C	+23°C	—	1-2 m/s, NNE	1.2 mm	80%
15Wed	+30°C	+24°C	—	2-3 m/s, SE	0.5 mm	86%
16Thu	+28°C	+23°C	—	2 m/s, ESE	2.8 mm	83%
17Fri	+27°C	+23°C	—	2 m/s, WSW	6.1 mm	88%
18Sat	+27°C	+22°C	—	2-3 m/s, S	6.9 mm	82%
19Sun	+26°C	+20°C	—	3-4 m/s, E	0.4 mm	81%
20Mon	+25°C	+19°C	—	3-5 m/s, E	0.1 mm	79%
21Tue	+30°C	+20°C	—	3-5 m/s, E	0 mm	77%
22Wed	+32°C	+21°C	—	2-3 m/s, ENE	0 mm	77%
23Thu	+26°C	+22°C	—	4-6 m/s, SW	10.1 mm	84%
24Fri	+26°C	+20°C	—	3-4 m/s, WSW	0.5 mm	74%
25Sat	+27°C	+20°C	—	2-3 m/s, WSW	0 mm	78%
26Sun	+30°C	+19°C	—	3-4 m/s, E	0 mm	76%
27Mon	+33°C	+22°C	—	2-3 m/s, WSW	0 mm	73%
28Tue	+31°C	+21°C	—	2-3 m/s, WSW	0.2 mm	72%
29Wed	+28°C	+23°C	—	2-3 m/s, WSW	1.1 mm	82%
30Thu	+27°C	+21°C	—	2-3 m/s, WSW	6.2 mm	84%
31Fri	+24°C	+22°C	—	2-3 m/s, NE	3.4 mm	95%

Weather highs and lows in Niteroi for december

Warmest day: 12 december, +34°C
Coldest night: 9 december, +17°C
Max precipitation: 23 december, 10.1 mm
Warmest water: —
Coldest water: —

Climate in Niteroi in december

Year: 2021
Average daytime temperature: +28°C
Average nighttime temperature: +21°C
Water temperature: —
Precipitation (month): 55.8 mm
Days with precipitation: 13
Humidity: 81%
Wind: 2 m/s

Daily air temperature for the month

Day Night

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December	Day	Night	Sea t°	Wind	Precip	Humidity
1Tue	+29°C	+25°C	—	2-4 m/s, S	0 mm	75%
2Wed	+28°C	+24°C	—	2-3 m/s, S	0.5 mm	78%
3Thu	+34°C	+23°C	—	2 m/s, E	0 mm	74%
4Fri	+32°C	+26°C	—	2-3 m/s, SW	0 mm	75%
5Sat	+28°C	+24°C	—	3-5 m/s, S	0.4 mm	82%
6Sun	+25°C	+24°C	—	3-4 m/s, SE	1.5 mm	86%
7Mon	+26°C	+23°C	—	2 m/s, ENE	6.9 mm	89%
8Tue	+27°C	+23°C	—	2 m/s, SSE	9.8 mm	87%
9Wed	+27°C	+23°C	—	2-3 m/s, SW	3 mm	82%
10Thu	+26°C	+23°C	—	2-3 m/s, SSW	2 mm	79%
11Fri	+28°C	+22°C	—	2-4 m/s, E	0 mm	80%
12Sat	+29°C	+24°C	—	2 m/s, ESE	0 mm	80%
13Sun	+30°C	+24°C	—	1-2 m/s, NE	0.1 mm	78%
14Mon	+34°C	+26°C	—	2 m/s, SW	0 mm	70%
15Tue	+33°C	+25°C	—	2-3 m/s, WSW	0 mm	71%
16Wed	+32°C	+25°C	—	2 m/s, E	0 mm	76%
17Thu	+31°C	+25°C	—	2 m/s, SSE	0 mm	75%
18Fri	+30°C	+25°C	—	2 m/s, SSE	0 mm	76%
19Sat	+31°C	+26°C	—	2-3 m/s, E	0 mm	76%
20Sun	+35°C	+25°C	—	2-3 m/s, E	0 mm	72%
21Mon	+33°C	+27°C	—	2 m/s, SSW	0 mm	75%
22Tue	+29°C	+24°C	—	2-4 m/s, SW	1.7 mm	80%
23Wed	+26°C	+23°C	—	3-4 m/s, S	2.8 mm	87%
24Thu	+24°C	+22°C	—	2-3 m/s, SSE	4.9 mm	86%
25Fri	+27°C	+23°C	—	2 m/s, SSE	0.7 mm	80%
26Sat	+28°C	+22°C	—	1-2 m/s, S	5.6 mm	78%
27Sun	+28°C	+23°C	—	2 m/s, E	4.2 mm	81%
28Mon	+30°C	+23°C	—	2 m/s, E	4.5 mm	78%
29Tue	+29°C	+24°C	—	2 m/s, ESE	0.9 mm	80%
30Wed	+30°C	+25°C	—	2-3 m/s, NE	0.1 mm	77%
31Thu	+35°C	+25°C	—	2-4 m/s, SSE	0.2 mm	64%

Weather highs and lows in Niteroi for december

Warmest day: 20 december, +35°C
Coldest night: 11 december, +22°C
Max precipitation: 8 december, 9.8 mm
Warmest water: —
Coldest water: —

Climate in Niteroi in december

Year: 2020
Average daytime temperature: +30°C
Average nighttime temperature: +24°C
Water temperature: —
Precipitation (month): 49.8 mm
Days with precipitation: 11
Humidity: 78%
Wind: 2 m/s

Daily air temperature for the month

Day Night

Tap a date to open detailed weather for that day

December	Day	Night	Sea t°	Wind	Precip	Humidity
1Sun	+29°C	+23°C	—	2-4 m/s, SSE	0.2 mm	92%
2Mon	+24°C	+21°C	—	3-4 m/s, SSW	0.2 mm	90%
3Tue	+23°C	+20°C	—	2-4 m/s, SE	0.1 mm	79%
4Wed	+28°C	+20°C	—	3-5 m/s, E	0 mm	77%
5Thu	+32°C	+23°C	—	2 m/s, E	0.2 mm	70%
6Fri	+26°C	+18°C	—	2-4 m/s, SSW	2.3 mm	85%
7Sat	+26°C	+20°C	—	2-3 m/s, SSW	0.3 mm	73%
8Sun	+26°C	+20°C	—	3-5 m/s, E	0 mm	78%
9Mon	+28°C	+20°C	—	3 m/s, E	0.2 mm	78%
10Tue	+25°C	+23°C	—	2 m/s, E	2.3 mm	93%
11Wed	+26°C	+23°C	—	2 m/s, SE	0.9 mm	92%
12Thu	+27°C	+23°C	—	2-3 m/s, NE	2.8 mm	94%
13Fri	+29°C	+23°C	—	2 m/s, SSW	0.1 mm	86%
14Sat	+26°C	+23°C	—	2 m/s, SW	0.4 mm	92%
15Sun	+31°C	+23°C	—	2-4 m/s, ENE	0 mm	82%
16Mon	+32°C	+23°C	—	3-4 m/s, NE	0 mm	74%
17Tue	+31°C	+24°C	—	2 m/s, SSW	0 mm	74%
18Wed	+28°C	+23°C	—	3-4 m/s, SSW	0 mm	87%
19Thu	+26°C	+23°C	—	2 m/s, SSW	0.7 mm	92%
20Fri	+28°C	+22°C	—	1-2 m/s, ESE	0.3 mm	89%
21Sat	+31°C	+24°C	—	2-3 m/s, NNE	0 mm	80%
22Sun	+31°C	+24°C	—	2-3 m/s, SW	0 mm	79%
23Mon	+25°C	+22°C	—	2 m/s, S	9.1 mm	93%
24Tue	+26°C	+23°C	—	2-3 m/s, E	3.3 mm	90%
25Wed	+27°C	+22°C	—	2-4 m/s, E	0 mm	86%
26Thu	+29°C	+23°C	—	2-4 m/s, ESE	0.1 mm	88%
27Fri	+28°C	+23°C	—	2-3 m/s, ESE	0.1 mm	88%
28Sat	+28°C	+23°C	—	3-5 m/s, E	0.4 mm	86%
29Sun	+28°C	+23°C	—	3-5 m/s, E	0 mm	84%
30Mon	+28°C	+23°C	—	3-4 m/s, E	0.5 mm	86%
31Tue	+29°C	+23°C	—	3-4 m/s, E	0 mm	84%

Weather highs and lows in Niteroi for december

Warmest day: 5 december, +32°C
Coldest night: 6 december, +18°C
Max precipitation: 23 december, 9.1 mm
Warmest water: —
Coldest water: —

Climate in Niteroi in december

Year: 2019
Average daytime temperature: +28°C
Average nighttime temperature: +22°C
Water temperature: —
Precipitation (month): 24.5 mm
Days with precipitation: 5
Humidity: 85%
Wind: 2 m/s

Weather in Niteroi in december by year

Year	Day	Night	Precipitation	Days with precipitation	Water
2025	+30°C	+22°C	19.6 mm	4	+25°C
2024	+28°C	+22°C	34.5 mm	9	—
2023	+30°C	+23°C	12.1 mm	4	—
2022	+27°C	+21°C	39.1 mm	13	—
2021	+28°C	+21°C	55.8 mm	13	—
2020	+30°C	+24°C	49.8 mm	11	—
2019	+28°C	+22°C	24.5 mm	5	—

Comparison december in Niteroi with other months

Month	Day	Night	Days with precipitation	Sunny days
January	+30°C	+24°C	7	9
February	+30°C	+24°C	7	8
March	+30°C	+23°C	5	11
April	+28°C	+21°C	4	11
May	+27°C	+20°C	3	16
June	+26°C	+19°C	3	17
July	+26°C	+18°C	2	19
August	+26°C	+18°C	3	18
September	+28°C	+20°C	3	16
October	+27°C	+21°C	7	7
November	+27°C	+21°C	8	7
December	+29°C	+22°C	8	7