Weather in Rio on 17 August 2026
Preliminary outlook for 17 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +30°C and nighttime around +24°C, average precipitation 0 mm, wind around 3 m/s, humidity around 55%.
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.
+25°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +22°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 45%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +28°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 9% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +26°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +26°C | Wind chill (avg.) | +25°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 175° ← (W) |
Sunrise
06:49
Duration
13 h 35 min
Sunset
20:24
Moonrise
00:03
Moonset
15:34
Moon phase
Last Quarter
Illumination
37%
+29°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +26°C
Sea temperature: +27°C
Precipitation: 0 mm
Wind: 2 — 2 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 4% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +27°C |
| Feels like (avg.) | +33°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +33°C | Wind chill (avg.) | +31°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 186° ↑ (N) |
Sunrise
06:49
Duration
13 h 34 min
Sunset
20:23
Moonrise
19:17
Moonset
03:37
Moon phase
Waxing Gibbous
Illumination
86%
+27°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +23°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 54%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 4% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +18°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 96° ↗ (NE) |
Sunrise
06:49
Duration
13 h 35 min
Sunset
20:24
Moonrise
07:48
Moonset
21:23
Moon phase
Waxing Crescent
Illumination
1%
+27°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +23°C
Precipitation: 0 mm
Wind: 3 — 5 m/s
Humidity: 61%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 2% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +19°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 222° ↙ (SW) |
Sunrise
06:49
Duration
13 h 35 min
Sunset
20:24
Moonrise
23:34
Moonset
12:37
Moon phase
Waning Gibbous
Illumination
61%
+27°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +24°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 63%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 1% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +19°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 243° ← (WNW) |
Sunrise
06:49
Duration
13 h 35 min
Sunset
20:24
Moonrise
16:01
Moonset
00:54
Moon phase
First Quarter
Illumination
61%
+27°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +24°C
Precipitation: 0 mm
Wind: 3 — 3 m/s
Humidity: 58%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 13 h |
| UV index | 7 | Cloud cover (avg.) | 3% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +18°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 110° ↗ (NE) |
Sunrise
06:49
Duration
13 h 34 min
Sunset
20:23
Moonrise
04:39
Moonset
19:40
Moon phase
Waning Crescent
Illumination
1%
Weather in Rio on 17 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+28°C
|
+22°C
|
+25°C | 14 h | 6 | 45% | 3 — 4 m/s |
| 2024 |
+32°C
|
+26°C
|
+29°C | 14 h | 7 | 48% | 2 — 2 m/s |
| 2023 |
+31°C
|
+23°C
|
+27°C | 14 h | 7 | 54% | 2 — 3 m/s |
| 2022 |
+30°C
|
+23°C
|
+27°C | 14 h | 7 | 61% | 3 — 5 m/s |
| 2021 |
+30°C
|
+24°C
|
+27°C | 14 h | 7 | 63% | 2 — 3 m/s |
| 2020 |
+31°C
|
+24°C
|
+27°C | 13 h | 7 | 58% | 3 — 3 m/s |