Weather in Buzios on 18 August 2026
Preliminary outlook for 18 August 2026
A preliminary estimate based on the 2019–2025 archive: daytime around +25°C and nighttime around +20°C, average precipitation 0 mm, wind around 6 m/s, humidity around 79%.
This is a climate-based estimate, not a precise long-range forecast. It is replaced by hourly data when the date enters the forecast window.
+20°C
Weather archive — latest year: 2025
Patchy rain nearby
Weather archive — latest year: 2025
Nighttime: +18°C
Precipitation: 0 mm
Wind: 4 — 5 m/s
Humidity: 77%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 6 h |
| UV index | 4 | Cloud cover (avg.) | 63% |
| Pressure (avg.) | 767 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +20°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 74° → (E) |
Sunrise
06:10
Duration
11 h 23 min
Sunset
17:33
Moonrise
02:16
Moonset
12:56
Moon phase
Last Quarter
Illumination
29%
+22°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +21°C
Precipitation: 0 mm
Wind: 7 — 9 m/s
Humidity: 82%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 11% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +24°C | Dew point (avg.) | +19°C |
| Heat index (avg.) | +24°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 15 m/s | Wind direction (avg.) | 49° ↗ (ENE) |
Sunrise
06:09
Duration
11 h 24 min
Sunset
17:33
Moonrise
16:28
Moonset
05:19
Moon phase
Waxing Gibbous
Illumination
93%
+22°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +19°C
Precipitation: 0 mm
Wind: 6 — 7 m/s
Humidity: 76%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 7% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +23°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +23°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 12 m/s | Wind direction (avg.) | 44° ↗ (NE) |
Sunrise
06:10
Duration
11 h 23 min
Sunset
17:33
Moonrise
07:34
Moonset
19:30
Moon phase
Waxing Crescent
Illumination
9%
+22°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +21°C
Precipitation: 0 mm
Wind: 10 — 11 m/s
Humidity: 77%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 1% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +23°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +24°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 18 m/s | Wind direction (avg.) | 39° ↗ (NE) |
Sunrise
06:10
Duration
11 h 23 min
Sunset
17:33
Moonrise
No moonrise
Moonset
10:33
Moon phase
Waning Gibbous
Illumination
54%
+22°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +21°C
Precipitation: 0 mm
Wind: 8 — 9 m/s
Humidity: 85%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 25% |
| Pressure (avg.) | 766 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +23°C | Dew point (avg.) | +19°C |
| Heat index (avg.) | +25°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 16 m/s | Wind direction (avg.) | 48° ↗ (NE) |
Sunrise
06:10
Duration
11 h 23 min
Sunset
17:33
Moonrise
13:41
Moonset
02:45
Moon phase
Waxing Gibbous
Illumination
69%
+22°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +20°C
Precipitation: 0 mm
Wind: 4 — 8 m/s
Humidity: 88%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 11 h |
| UV index | 5 | Cloud cover (avg.) | 35% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +24°C | Dew point (avg.) | +20°C |
| Heat index (avg.) | +24°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 14 m/s | Wind direction (avg.) | 183° ↗ (NE) |
Sunrise
06:09
Duration
11 h 24 min
Sunset
17:33
Moonrise
05:52
Moonset
17:11
Moon phase
New Moon
Illumination
0%
+22°C
Weather archive — for 2019 year
Clear/Sunny
Weather archive — for 2019 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 5 — 8 m/s
Humidity: 71%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 2% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 14 m/s | Wind direction (avg.) | 28° ↑ (NNE) |
Sunrise
06:10
Duration
11 h 23 min
Sunset
17:33
Moonrise
20:14
Moonset
08:08
Moon phase
Waning Gibbous
Illumination
78%
Weather in Buzios on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+21°C
|
+18°C
|
+20°C | 6 h | 4 | 77% | 4 — 5 m/s |
| 2024 |
+25°C
|
+21°C
|
+22°C | 11 h | 6 | 82% | 7 — 9 m/s |
| 2023 |
+26°C
|
+19°C
|
+22°C | 11 h | 6 | 76% | 6 — 7 m/s |
| 2022 |
+25°C
|
+21°C
|
+22°C | 11 h | 6 | 77% | 10 — 11 m/s |
| 2021 |
+24°C
|
+21°C
|
+22°C | 11 h | 6 | 85% | 8 — 9 m/s |
| 2020 |
+25°C
|
+20°C
|
+22°C | 11 h | 5 | 88% | 4 — 8 m/s |
| 2019 |
+26°C
|
+18°C
|
+22°C | 11 h | 6 | 71% | 5 — 8 m/s |