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September

Ostend Weather in September with Sea Temperature

September weather in Ostend includes average daytime air +19°C, nighttime +14°C, average sea temperature +18°C. Daily water temperatures usually range from +17°C to +19°C, which is cool for long swims. 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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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Mon	+21°C	+16°C	+19°C	5 m/s	0.2 mm	71%
2Tue	+21°C	+15°C	+19°C	4 m/s	0.2 mm	73%
3Wed	+21°C	+16°C	+19°C	6 m/s	0.4 mm	79%
4Thu	+21°C	+16°C	+19°C	5 m/s	0.3 mm	76%
5Fri	+20°C	+16°C	+18°C	5 m/s	0.1 mm	74%
6Sat	+21°C	+15°C	+19°C	4 m/s	1 mm	73%
7Sun	+23°C	+15°C	+18°C	4 m/s	0.2 mm	71%
8Mon	+20°C	+16°C	+19°C	5 m/s	0.3 mm	76%
9Tue	+20°C	+16°C	+19°C	4 m/s	0.5 mm	77%
10Wed	+21°C	+15°C	+18°C	5 m/s	0.3 mm	71%
11Thu	+19°C	+15°C	+18°C	6 m/s	1.5 mm	75%
12Fri	+19°C	+15°C	+18°C	5 m/s	0.6 mm	77%
13Sat	+18°C	+14°C	+18°C	5 m/s	0.9 mm	78%
14Sun	+19°C	+15°C	+18°C	4 m/s	0.6 mm	74%
15Mon	+20°C	+15°C	+18°C	5 m/s	0.5 mm	73%
16Tue	+19°C	+15°C	+18°C	6 m/s	0.4 mm	74%
17Wed	+18°C	+15°C	+18°C	6 m/s	0.2 mm	75%
18Thu	+19°C	+15°C	+18°C	7 m/s	0.2 mm	73%
19Fri	+20°C	+15°C	+18°C	6 m/s	0 mm	71%
20Sat	+19°C	+14°C	+18°C	5 m/s	0.4 mm	70%
21Sun	+19°C	+13°C	+18°C	4 m/s	0.3 mm	72%
22Mon	+19°C	+13°C	+18°C	5 m/s	0.8 mm	71%
23Tue	+17°C	+14°C	+17°C	5 m/s	0.2 mm	74%
24Wed	+17°C	+13°C	+17°C	6 m/s	0.7 mm	79%
25Thu	+17°C	+13°C	+17°C	6 m/s	0.4 mm	75%
26Fri	+17°C	+13°C	+18°C	7 m/s	0.9 mm	78%
27Sat	+17°C	+13°C	+18°C	7 m/s	1.3 mm	75%
28Sun	+16°C	+13°C	+17°C	6 m/s	0.3 mm	74%
29Mon	+16°C	+12°C	+17°C	5 m/s	0.4 mm	76%
30Tue	+17°C	+12°C	+17°C	6 m/s	0.2 mm	74%

Sea water temperature by months

Water +18°C

Day and night air temperature

Day +19°C Night +14°C

Weather highs and lows in Ostend for september

Warmest day: 7 september, +23°C
Coldest night: 30 september, +12°C
Max precipitation: 11 september, 1.5 mm
Warmest sea water: 1 september, +19°C
Coldest sea water: 23 september, +17°C

Climate in Ostend in september

Average daytime temperature: +19°C
Average nighttime temperature: +14°C
Sea water temperature: —
Precipitation (monthly average): 14.1 mm
Days with precipitation: 4.9
Humidity: 74%
Wind: 5 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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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Mon	+22°C	+16°C	+19°C	7-8 m/s, SW	0 mm	65%
2Tue	+22°C	+14°C	+19°C	7-8 m/s, SSW	1 mm	73%
3Wed	+22°C	+16°C	+19°C	11-13 m/s, SSW	1 mm	83%
4Thu	+21°C	+15°C	+19°C	8-9 m/s, SSW	0.3 mm	74%
5Fri	+19°C	+16°C	+18°C	5-7 m/s, W	0 mm	70%
6Sat	+24°C	+14°C	+19°C	3-5 m/s, SE	0 mm	62%
7Sun	+28°C	+16°C	+18°C	6-7 m/s, SSE	0.4 mm	61%
8Mon	+19°C	+17°C	+19°C	5-6 m/s, W	0 mm	76%
9Tue	+18°C	+14°C	+19°C	3-4 m/s, NW	0 mm	65%
10Wed	+22°C	+14°C	+18°C	5-7 m/s, SSE	0.5 mm	64%
11Thu	+18°C	+15°C	+18°C	10-11 m/s, SW	1.6 mm	74%
12Fri	+17°C	+13°C	+18°C	9-10 m/s, WSW	1.6 mm	74%
13Sat	+17°C	+13°C	+18°C	8-10 m/s, SSW	5.1 mm	79%
14Sun	+19°C	+14°C	+18°C	7-9 m/s, SSW	0.3 mm	71%
15Mon	+19°C	+16°C	+18°C	14-16 m/s, WSW	3.3 mm	78%
16Tue	+18°C	+15°C	+18°C	12-14 m/s, W	0.1 mm	68%
17Wed	+19°C	+14°C	+18°C	8-10 m/s, SSW	0.2 mm	79%
18Thu	+21°C	+17°C	+18°C	8-9 m/s, WSW	0 mm	85%
19Fri	+25°C	+16°C	+18°C	4-5 m/s, S	0 mm	67%
20Sat	+21°C	+16°C	+18°C	5-6 m/s, WSW	2.1 mm	68%
21Sun	+16°C	+13°C	+18°C	7-10 m/s, NNE	0.1 mm	73%
22Mon	+15°C	+13°C	+18°C	9 m/s, NE	0.5 mm	60%
23Tue	+16°C	+12°C	+17°C	6-8 m/s, NE	0.8 mm	67%
24Wed	+16°C	+12°C	+17°C	8-9 m/s, NE	0 mm	60%
25Thu	+17°C	+12°C	+17°C	8-9 m/s, ENE	0 mm	53%
26Fri	+15°C	+10°C	+18°C	5-8 m/s, E	0 mm	67%
27Sat	+17°C	+13°C	+18°C	2-3 m/s, S	0 mm	66%
28Sun	+17°C	+11°C	+17°C	3-4 m/s, S	0 mm	70%
29Mon	+17°C	+14°C	+17°C	3-4 m/s, N	0 mm	75%
30Tue	+16°C	+13°C	+17°C	4 m/s, N	0 mm	68%

Weather highs and lows in Ostend for september

Warmest day: 7 september, +28°C
Coldest night: 26 september, +10°C
Max precipitation: 13 september, 5.1 mm
Warmest water: 1 september, +19°C
Coldest water: 23 september, +17°C

Climate in Ostend in september

Year: 2025
Average daytime temperature: +19°C
Average nighttime temperature: +14°C
Water temperature: +18°C
Precipitation (month): 18.9 mm
Days with precipitation: 7
Humidity: 70%
Wind: 7 m/s

Daily air temperature for the month

Day Night

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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Sun	+26°C	+18°C	—	5-6 m/s, E	0 mm	77%
2Mon	+23°C	+18°C	—	5-6 m/s, SW	0 mm	82%
3Tue	+22°C	+17°C	—	5 m/s, SW	1.8 mm	75%
4Wed	+19°C	+17°C	—	4-5 m/s, N	0.4 mm	74%
5Thu	+20°C	+16°C	—	5-8 m/s, NNE	0.2 mm	87%
6Fri	+19°C	+16°C	—	3-4 m/s, WSW	1.7 mm	94%
7Sat	+24°C	+16°C	—	4-5 m/s, ENE	0.4 mm	74%
8Sun	+19°C	+15°C	—	8-9 m/s, S	0 mm	84%
9Mon	+19°C	+16°C	—	7-10 m/s, NW	0.8 mm	83%
10Tue	+18°C	+14°C	—	9-11 m/s, WSW	0.9 mm	73%
11Wed	+14°C	+12°C	—	9 m/s, W	7.6 mm	66%
12Thu	+14°C	+12°C	—	6-7 m/s, WNW	2.4 mm	66%
13Fri	+15°C	+12°C	—	6-7 m/s, NNE	0.7 mm	69%
14Sat	+16°C	+13°C	—	3 m/s, WNW	0 mm	56%
15Sun	+17°C	+14°C	—	3-4 m/s, W	0 mm	70%
16Mon	+18°C	+16°C	—	6-8 m/s, NNE	0.1 mm	73%
17Tue	+18°C	+16°C	—	8-9 m/s, NE	0.1 mm	79%
18Wed	+21°C	+16°C	—	7-8 m/s, NE	0 mm	80%
19Thu	+21°C	+16°C	—	7-8 m/s, ENE	0 mm	73%
20Fri	+21°C	+15°C	—	5-6 m/s, ENE	0 mm	72%
21Sat	+23°C	+15°C	—	4-5 m/s, ESE	0 mm	72%
22Sun	+21°C	+16°C	—	4-5 m/s, ESE	0 mm	81%
23Mon	+19°C	+15°C	—	5-7 m/s, SW	0.1 mm	85%
24Tue	+16°C	+13°C	—	6 m/s, WSW	0 mm	87%
25Wed	+15°C	+13°C	—	5-7 m/s, SW	0.5 mm	88%
26Thu	+18°C	+14°C	—	7-10 m/s, SSW	2.4 mm	86%
27Fri	+14°C	+12°C	—	11-13 m/s, NW	2.9 mm	77%
28Sat	+13°C	+11°C	—	7-10 m/s, NW	0 mm	64%
29Sun	+14°C	+8°C	—	4-6 m/s, SSE	0 mm	66%
30Mon	+16°C	+11°C	—	10-14 m/s, S	1 mm	84%

Weather highs and lows in Ostend for september

Warmest day: 1 september, +26°C
Coldest night: 29 september, +8°C
Max precipitation: 11 september, 7.6 mm
Warmest water: —
Coldest water: —

Climate in Ostend in september

Year: 2024
Average daytime temperature: +18°C
Average nighttime temperature: +14°C
Water temperature: —
Precipitation (month): 24 mm
Days with precipitation: 7
Humidity: 77%
Wind: 6 m/s

Daily air temperature for the month

Day Night

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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Fri	+19°C	+17°C	—	4-5 m/s, WSW	0.9 mm	90%
2Sat	+21°C	+17°C	—	2-5 m/s, NNE	0.1 mm	86%
3Sun	+21°C	+17°C	—	4-5 m/s, ENE	0 mm	84%
4Mon	+23°C	+16°C	—	4-5 m/s, E	0 mm	68%
5Tue	+26°C	+18°C	—	4-5 m/s, E	0 mm	66%
6Wed	+27°C	+19°C	—	3-4 m/s, E	0 mm	64%
7Thu	+26°C	+19°C	—	3-4 m/s, E	0 mm	61%
8Fri	+23°C	+19°C	—	3-4 m/s, WNW	0 mm	72%
9Sat	+25°C	+20°C	—	2-3 m/s, ENE	0 mm	65%
10Sun	+29°C	+21°C	—	4-5 m/s, SE	0 mm	62%
11Mon	+22°C	+19°C	—	3-4 m/s, WNW	0 mm	82%
12Tue	+20°C	+17°C	—	5 m/s, W	0.2 mm	86%
13Wed	+19°C	+15°C	—	6-8 m/s, NE	0.1 mm	72%
14Thu	+20°C	+17°C	—	2-3 m/s, NNE	0 mm	69%
15Fri	+23°C	+14°C	—	4-5 m/s, SSE	0 mm	67%
16Sat	+22°C	+16°C	—	5-6 m/s, NE	0 mm	70%
17Sun	+22°C	+17°C	—	4-5 m/s, E	0.6 mm	77%
18Mon	+21°C	+17°C	—	8-11 m/s, SW	0.1 mm	83%
19Tue	+19°C	+16°C	—	11-13 m/s, SW	0.1 mm	72%
20Wed	+22°C	+16°C	—	10-11 m/s, SSW	0 mm	74%
21Thu	+20°C	+14°C	—	6-9 m/s, S	2 mm	78%
22Fri	+16°C	+12°C	—	6-8 m/s, SSW	2.4 mm	77%
23Sat	+15°C	+13°C	—	6-7 m/s, W	0.2 mm	69%
24Sun	+19°C	+12°C	—	6-8 m/s, S	0 mm	69%
25Mon	+20°C	+14°C	—	5-8 m/s, SSW	0 mm	68%
26Tue	+21°C	+15°C	—	4-5 m/s, S	0 mm	71%
27Wed	+23°C	+17°C	—	4-5 m/s, SSE	0 mm	72%
28Thu	+19°C	+16°C	—	6-8 m/s, SW	0 mm	74%
29Fri	+20°C	+15°C	—	6-8 m/s, W	0 mm	76%
30Sat	+17°C	+15°C	—	2-4 m/s, WSW	0 mm	69%

Weather highs and lows in Ostend for september

Warmest day: 10 september, +29°C
Coldest night: 22 september, +12°C
Max precipitation: 22 september, 2.4 mm
Warmest water: —
Coldest water: —

Climate in Ostend in september

Year: 2023
Average daytime temperature: +21°C
Average nighttime temperature: +16°C
Water temperature: —
Precipitation (month): 6.7 mm
Days with precipitation: 2
Humidity: 73%
Wind: 5 m/s

Daily air temperature for the month

Day Night

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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Thu	+25°C	+17°C	—	6-7 m/s, ENE	0 mm	57%
2Fri	+26°C	+18°C	—	4-5 m/s, ESE	0 mm	55%
3Sat	+23°C	+16°C	—	2-3 m/s, WSW	0 mm	71%
4Sun	+24°C	+17°C	—	3-4 m/s, S	0 mm	71%
5Mon	+23°C	+18°C	—	3-4 m/s, SSE	0 mm	71%
6Tue	+24°C	+18°C	—	5-6 m/s, WSW	4 mm	76%
7Wed	+23°C	+16°C	—	4-5 m/s, SSW	0 mm	74%
8Thu	+20°C	+16°C	—	5-6 m/s, SW	2.2 mm	77%
9Fri	+19°C	+15°C	—	8-9 m/s, SSW	2.4 mm	85%
10Sat	+20°C	+17°C	—	6 m/s, W	0.2 mm	78%
11Sun	+20°C	+17°C	—	2-3 m/s, SW	0.1 mm	66%
12Mon	+24°C	+15°C	—	3-4 m/s, SSE	0 mm	68%
13Tue	+21°C	+17°C	—	3 m/s, ESE	0.2 mm	71%
14Wed	+18°C	+15°C	—	4-5 m/s, E	4 mm	89%
15Thu	+19°C	+16°C	—	4-5 m/s, NW	0.1 mm	74%
16Fri	+16°C	+14°C	—	7-8 m/s, NNW	2.6 mm	64%
17Sat	+16°C	+13°C	—	8-9 m/s, NNW	0.7 mm	63%
18Sun	+16°C	+14°C	—	8-9 m/s, NNW	1 mm	60%
19Mon	+17°C	+15°C	—	5-6 m/s, NNW	0 mm	61%
20Tue	+17°C	+15°C	—	4-5 m/s, N	0 mm	62%
21Wed	+18°C	+13°C	—	3-4 m/s, E	0 mm	64%
22Thu	+19°C	+11°C	—	3-4 m/s, SSE	0 mm	60%
23Fri	+17°C	+12°C	—	3 m/s, SSE	0.3 mm	54%
24Sat	+15°C	+14°C	—	4-6 m/s, ENE	0.8 mm	85%
25Sun	+16°C	+14°C	—	4-6 m/s, NE	0.2 mm	72%
26Mon	+15°C	+13°C	—	6-8 m/s, WSW	1.5 mm	74%
27Tue	+13°C	+11°C	—	7-8 m/s, WNW	0.7 mm	67%
28Wed	+15°C	+11°C	—	6-7 m/s, WNW	0.5 mm	68%
29Thu	+13°C	+10°C	—	4 m/s, E	0.1 mm	76%
30Fri	+18°C	+10°C	—	4-6 m/s, SSW	0 mm	66%

Weather highs and lows in Ostend for september

Warmest day: 2 september, +26°C
Coldest night: 29 september, +10°C
Max precipitation: 6 september, 4 mm
Warmest water: —
Coldest water: —

Climate in Ostend in september

Year: 2022
Average daytime temperature: +19°C
Average nighttime temperature: +15°C
Water temperature: —
Precipitation (month): 21.6 mm
Days with precipitation: 7
Humidity: 69%
Wind: 5 m/s

Daily air temperature for the month

Day Night

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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Wed	+17°C	+14°C	—	5-6 m/s, NNE	0.1 mm	80%
2Thu	+20°C	+14°C	—	5-7 m/s, NE	0 mm	88%
3Fri	+19°C	+13°C	—	5-6 m/s, NNE	0 mm	88%
4Sat	+19°C	+13°C	—	5 m/s, NE	0 mm	85%
5Sun	+20°C	+14°C	—	4 m/s, NE	0 mm	80%
6Mon	+21°C	+14°C	—	3-4 m/s, NE	0 mm	78%
7Tue	+23°C	+14°C	—	4-5 m/s, ENE	0 mm	70%
8Wed	+27°C	+15°C	—	4-5 m/s, E	0 mm	66%
9Thu	+21°C	+16°C	—	3-4 m/s, WSW	0 mm	84%
10Fri	+19°C	+16°C	—	3-4 m/s, W	0.2 mm	87%
11Sat	+18°C	+14°C	—	6-7 m/s, WSW	0.3 mm	86%
12Sun	+18°C	+14°C	—	4-5 m/s, WNW	0 mm	86%
13Mon	+17°C	+13°C	—	4-5 m/s, NE	0 mm	87%
14Tue	+18°C	+15°C	—	3-4 m/s, NE	0 mm	86%
15Wed	+17°C	+15°C	—	4-5 m/s, W	0.1 mm	92%
16Thu	+18°C	+14°C	—	3 m/s, WSW	0.1 mm	84%
17Fri	+19°C	+14°C	—	3 m/s, SW	0 mm	82%
18Sat	+20°C	+14°C	—	4-5 m/s, E	0.1 mm	75%
19Sun	+19°C	+14°C	—	3-4 m/s, NNE	0 mm	80%
20Mon	+16°C	+13°C	—	4-6 m/s, NNE	0.5 mm	80%
21Tue	+16°C	+11°C	—	2-3 m/s, NNW	0 mm	82%
22Wed	+17°C	+11°C	—	2 m/s, NNW	0 mm	74%
23Thu	+17°C	+13°C	—	5-7 m/s, W	0 mm	84%
24Fri	+18°C	+14°C	—	4-6 m/s, WSW	0.1 mm	86%
25Sat	+18°C	+13°C	—	3-5 m/s, W	0 mm	80%
26Sun	+20°C	+15°C	—	4-5 m/s, SW	0.3 mm	78%
27Mon	+17°C	+13°C	—	7-8 m/s, WSW	1.1 mm	80%
28Tue	+17°C	+12°C	—	5-6 m/s, SSW	0 mm	78%
29Wed	+15°C	+11°C	—	8-9 m/s, WSW	0.9 mm	74%
30Thu	+15°C	+9°C	—	7-8 m/s, SW	0 mm	72%

Weather highs and lows in Ostend for september

Warmest day: 8 september, +27°C
Coldest night: 30 september, +9°C
Max precipitation: 27 september, 1.1 mm
Warmest water: —
Coldest water: —

Climate in Ostend in september

Year: 2021
Average daytime temperature: +19°C
Average nighttime temperature: +14°C
Water temperature: —
Precipitation (month): 3.8 mm
Days with precipitation: 1
Humidity: 81%
Wind: 4 m/s

Daily air temperature for the month

Day Night

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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Tue	+16°C	+13°C	—	2-3 m/s, ESE	0.1 mm	66%
2Wed	+17°C	+13°C	—	2-3 m/s, SW	0 mm	66%
3Thu	+20°C	+15°C	—	6-8 m/s, SW	0.1 mm	73%
4Fri	+19°C	+16°C	—	5-6 m/s, W	0.2 mm	80%
5Sat	+16°C	+14°C	—	5-6 m/s, WNW	0 mm	75%
6Sun	+16°C	+14°C	—	3-4 m/s, WNW	0 mm	67%
7Mon	+18°C	+14°C	—	4-5 m/s, WSW	0 mm	77%
8Tue	+19°C	+16°C	—	5-7 m/s, W	0 mm	85%
9Wed	+20°C	+17°C	—	5-6 m/s, W	0 mm	90%
10Thu	+18°C	+14°C	—	4-5 m/s, NE	0 mm	72%
11Fri	+19°C	+14°C	—	2-3 m/s, W	0 mm	70%
12Sat	+18°C	+14°C	—	5-6 m/s, W	0 mm	80%
13Sun	+20°C	+14°C	—	4-5 m/s, WSW	0 mm	83%
14Mon	+25°C	+15°C	—	3-4 m/s, ESE	0 mm	71%
15Tue	+26°C	+18°C	—	3-4 m/s, SSE	0 mm	66%
16Wed	+22°C	+18°C	—	5-7 m/s, ESE	0 mm	76%
17Thu	+19°C	+15°C	—	7-8 m/s, NE	0 mm	72%
18Fri	+20°C	+13°C	—	6-7 m/s, ENE	0 mm	65%
19Sat	+21°C	+14°C	—	6-7 m/s, ENE	0 mm	66%
20Sun	+20°C	+16°C	—	5-6 m/s, NE	0 mm	67%
21Mon	+19°C	+14°C	—	3-4 m/s, NE	0 mm	76%
22Tue	+20°C	+15°C	—	2 m/s, WSW	0 mm	73%
23Wed	+19°C	+16°C	—	6-8 m/s, SW	0.1 mm	81%
24Thu	+16°C	+10°C	—	7-9 m/s, SSW	0.2 mm	80%
25Fri	+13°C	+9°C	—	9-16 m/s, NW	2.2 mm	77%
26Sat	+15°C	+11°C	—	13-16 m/s, NNW	1.4 mm	80%
27Sun	+17°C	+12°C	—	11-14 m/s, WSW	4.3 mm	86%
28Mon	+17°C	+14°C	—	6-7 m/s, NW	1.2 mm	86%
29Tue	+17°C	+13°C	—	3-4 m/s, W	0.1 mm	81%
30Wed	+17°C	+13°C	—	5-6 m/s, S	0.1 mm	83%

Weather highs and lows in Ostend for september

Warmest day: 15 september, +26°C
Coldest night: 25 september, +9°C
Max precipitation: 27 september, 4.3 mm
Warmest water: —
Coldest water: —

Climate in Ostend in september

Year: 2020
Average daytime temperature: +19°C
Average nighttime temperature: +14°C
Water temperature: —
Precipitation (month): 10 mm
Days with precipitation: 4
Humidity: 76%
Wind: 5 m/s

Daily air temperature for the month

Day Night

Tap a date to open detailed weather for that day

September	Day	Night	Sea t°	Wind	Precip	Humidity
1Sun	+19°C	+15°C	—	5-6 m/s, WNW	0 mm	64%
2Mon	+19°C	+14°C	—	5-6 m/s, W	0 mm	62%
3Tue	+19°C	+15°C	—	6-7 m/s, W	0 mm	76%
4Wed	+20°C	+15°C	—	7 m/s, W	1.3 mm	81%
5Thu	+16°C	+13°C	—	7-8 m/s, NW	0.2 mm	66%
6Fri	+19°C	+12°C	—	6-9 m/s, WSW	1 mm	67%
7Sat	+16°C	+13°C	—	6-9 m/s, NW	0.4 mm	78%
8Sun	+16°C	+12°C	—	5-6 m/s, N	0 mm	72%
9Mon	+17°C	+11°C	—	3-5 m/s, SW	0 mm	65%
10Tue	+19°C	+12°C	—	2-3 m/s, N	0 mm	64%
11Wed	+19°C	+15°C	—	7-9 m/s, SW	0.9 mm	83%
12Thu	+20°C	+17°C	—	6-8 m/s, W	0.1 mm	82%
13Fri	+18°C	+14°C	—	6-7 m/s, N	0.1 mm	83%
14Sat	+20°C	+13°C	—	4-5 m/s, ENE	0 mm	73%
15Sun	+20°C	+14°C	—	3-4 m/s, WNW	0 mm	66%
16Mon	+18°C	+15°C	—	4 m/s, WNW	0.1 mm	80%
17Tue	+16°C	+13°C	—	5-7 m/s, SW	0 mm	72%
18Wed	+16°C	+13°C	—	5-6 m/s, NNE	0 mm	66%
19Thu	+17°C	+12°C	—	4-5 m/s, NE	0 mm	75%
20Fri	+19°C	+10°C	—	5-6 m/s, E	0 mm	66%
21Sat	+24°C	+12°C	—	5-6 m/s, ESE	0 mm	62%
22Sun	+23°C	+16°C	—	6 m/s, S	2.5 mm	72%
23Mon	+19°C	+14°C	—	5-6 m/s, WSW	0 mm	77%
24Tue	+17°C	+15°C	—	7-8 m/s, S	3.9 mm	84%
25Wed	+17°C	+14°C	—	8 m/s, SSW	0.1 mm	88%
26Thu	+18°C	+15°C	—	7-8 m/s, SW	1 mm	88%
27Fri	+17°C	+14°C	—	8-10 m/s, SW	0.3 mm	80%
28Sat	+17°C	+14°C	—	9-10 m/s, WSW	0.2 mm	78%
29Sun	+18°C	+14°C	—	9-11 m/s, SW	1.6 mm	86%
30Mon	+17°C	+13°C	—	7-10 m/s, W	0.2 mm	78%

Weather highs and lows in Ostend for september

Warmest day: 21 september, +24°C
Coldest night: 20 september, +10°C
Max precipitation: 24 september, 3.9 mm
Warmest water: —
Coldest water: —

Climate in Ostend in september

Year: 2019
Average daytime temperature: +18°C
Average nighttime temperature: +14°C
Water temperature: —
Precipitation (month): 13.9 mm
Days with precipitation: 6
Humidity: 74%
Wind: 6 m/s

Weather in Ostend in september by year

Year	Day	Night	Precipitation	Days with precipitation	Water
2025	+19°C	+14°C	18.9 mm	7	+18°C
2024	+18°C	+14°C	24 mm	7	—
2023	+21°C	+16°C	6.7 mm	2	—
2022	+19°C	+15°C	21.6 mm	7	—
2021	+19°C	+14°C	3.8 mm	1	—
2020	+19°C	+14°C	10 mm	4	—
2019	+18°C	+14°C	13.9 mm	6	—

Comparison september in Ostend with other months

Month	Day	Night	Days with precipitation	Sunny days
January	+7°C	+4°C	5	5
February	+9°C	+5°C	4	7
March	+10°C	+6°C	3	9
April	+12°C	+7°C	3	10
May	+15°C	+10°C	3	9
June	+19°C	+14°C	4	13
July	+20°C	+15°C	4	10
August	+21°C	+16°C	4	10
September	+19°C	+14°C	5	9
October	+16°C	+12°C	6	4
November	+12°C	+8°C	6	3
December	+9°C	+6°C	5	3