Weather in Rio on 15 August 2026
Preliminary outlook for 15 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +30°C and nighttime around +23°C, average precipitation 0 mm, wind around 3 m/s, humidity around 53%.
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.
+26°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +22°C
Precipitation: 0 mm
Wind: 3 — 5 m/s
Humidity: 45%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 5% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +27°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +27°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 67° ↗ (NE) |
Sunrise
06:47
Duration
13 h 39 min
Sunset
20:26
Moonrise
23:26
Moonset
13:07
Moon phase
Last Quarter
Illumination
51%
+30°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +25°C
Sea temperature: +28°C
Precipitation: 0 mm
Wind: 4 — 5 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +35°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 0% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +28°C |
| Feels like (avg.) | +32°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +32°C | Wind chill (avg.) | +31°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 71° ↗ (ENE) |
Sunrise
06:48
Duration
13 h 38 min
Sunset
20:26
Moonrise
17:41
Moonset
01:43
Moon phase
Waxing Gibbous
Illumination
71%
+25°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +22°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 60%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 11% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +28°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +28°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 171° ← (W) |
Sunrise
06:47
Duration
13 h 40 min
Sunset
20:27
Moonrise
05:42
Moonset
20:31
Moon phase
New Moon
Illumination
0%
+24°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +21°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 66%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 5% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +25°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +25°C | Wind chill (avg.) | +24°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 224° ↙ (WSW) |
Sunrise
06:47
Duration
13 h 40 min
Sunset
20:27
Moonrise
22:39
Moonset
10:15
Moon phase
Waning Gibbous
Illumination
76%
+28°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +24°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 45%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 4% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 104° ↗ (NE) |
Sunrise
06:47
Duration
13 h 39 min
Sunset
20:26
Moonrise
13:39
Moonset
Does not set today
Moon phase
First Quarter
Illumination
47%
+27°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +25°C
Precipitation: 0 mm
Wind: 1 — 3 m/s
Humidity: 61%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 5% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +30°C | Dew point (avg.) | +19°C |
| Heat index (avg.) | +30°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 190° → (ESE) |
Sunrise
06:48
Duration
13 h 38 min
Sunset
20:26
Moonrise
02:51
Moonset
18:06
Moon phase
Waning Crescent
Illumination
16%
Weather in Rio on 15 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+30°C
|
+22°C
|
+26°C | 14 h | 7 | 45% | 3 — 5 m/s |
| 2024 |
+35°C
|
+25°C
|
+30°C | 14 h | 7 | 40% | 4 — 5 m/s |
| 2023 |
+27°C
|
+22°C
|
+25°C | 14 h | 7 | 60% | 2 — 3 m/s |
| 2022 |
+27°C
|
+21°C
|
+24°C | 14 h | 6 | 66% | 3 — 4 m/s |
| 2021 |
+32°C
|
+24°C
|
+28°C | 14 h | 7 | 45% | 3 — 4 m/s |
| 2020 |
+31°C
|
+25°C
|
+27°C | 14 h | 7 | 61% | 1 — 3 m/s |