Weather in San Tome on 17 August 2026
Preliminary outlook for 17 August 2026
A preliminary estimate based on the 2019–2025 archive: daytime around +32°C and nighttime around +22°C, average precipitation 0.5 mm, wind around 2 m/s, humidity around 81%.
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
Patchy rain nearby
Weather archive — latest year: 2025
Nighttime: +22°C
Precipitation: 0.2 mm
Wind: 1 — 1 m/s
Humidity: 81%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +33°C | Sun hours | 5 h |
| UV index | 6 | Cloud cover (avg.) | 63% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 6 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +22°C |
| Heat index (avg.) | +30°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 3 m/s | Wind direction (avg.) | 149° ↘ (SSE) |
Sunrise
06:03
Duration
12 h 23 min
Sunset
18:26
Moonrise
00:29
Moonset
13:35
Moon phase
Last Quarter
Illumination
37%
+28°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +23°C
Precipitation: 0 mm
Wind: 2 — 2 m/s
Humidity: 68%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +37°C | Sun hours | 9 h |
| UV index | 7 | Cloud cover (avg.) | 21% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +31°C | Dew point (avg.) | +22°C |
| Heat index (avg.) | +31°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 4 m/s | Wind direction (avg.) | 127° → (E) |
Sunrise
06:03
Duration
12 h 23 min
Sunset
18:26
Moonrise
16:51
Moonset
03:46
Moon phase
Waxing Gibbous
Illumination
86%
+27°C
Weather archive — for 2023 year
Partly Cloudy
Weather archive — for 2023 year
Nighttime: +23°C
Precipitation: 0.2 mm
Wind: 1 — 2 m/s
Humidity: 81%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +33°C | Sun hours | 5 h |
| UV index | 7 | Cloud cover (avg.) | 71% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +31°C | Dew point (avg.) | +23°C |
| Heat index (avg.) | +31°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 134° ← (W) |
Sunrise
06:03
Duration
12 h 23 min
Sunset
18:26
Moonrise
06:57
Moonset
19:31
Moon phase
Waxing Crescent
Illumination
1%
+26°C
Weather archive — for 2022 year
Patchy rain nearby
Weather archive — for 2022 year
Nighttime: +22°C
Precipitation: 0.3 mm
Wind: 3 — 4 m/s
Humidity: 81%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 4 h |
| UV index | 7 | Cloud cover (avg.) | 73% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +23°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 47° ↑ (NNE) |
Sunrise
06:03
Duration
12 h 23 min
Sunset
18:26
Moonrise
22:59
Moonset
10:52
Moon phase
Waning Gibbous
Illumination
61%
+25°C
Weather archive — for 2021 year
Patchy rain nearby
Weather archive — for 2021 year
Nighttime: +22°C
Precipitation: 0.2 mm
Wind: 2 — 3 m/s
Humidity: 85%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 8 h |
| UV index | 7 | Cloud cover (avg.) | 63% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 6 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +23°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 67° ↗ (ENE) |
Sunrise
06:03
Duration
12 h 23 min
Sunset
18:26
Moonrise
14:10
Moonset
01:08
Moon phase
First Quarter
Illumination
61%
+27°C
Weather archive — for 2020 year
Partly Cloudy
Weather archive — for 2020 year
Nighttime: +23°C
Precipitation: 0.3 mm
Wind: 2 — 2 m/s
Humidity: 84%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 9 h |
| UV index | 7 | Cloud cover (avg.) | 55% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +31°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +31°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 55° ↗ (ENE) |
Sunrise
06:03
Duration
12 h 23 min
Sunset
18:26
Moonrise
04:31
Moonset
17:27
Moon phase
Waning Crescent
Illumination
1%
+25°C
Weather archive — for 2019 year
Patchy rain nearby
Weather archive — for 2019 year
Nighttime: +22°C
Precipitation: 2.6 mm
Wind: 2 — 2 m/s
Humidity: 89%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 5 h |
| UV index | 6 | Cloud cover (avg.) | 81% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 6 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +23°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 166° ↙ (SW) |
Sunrise
06:03
Duration
12 h 23 min
Sunset
18:26
Moonrise
20:09
Moonset
07:36
Moon phase
Waxing Gibbous
Illumination
86%
Weather in San Tome on 17 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+33°C
|
+22°C
|
+26°C | 5 h | 6 | 81% | 1 — 1 m/s |
| 2024 |
+37°C
|
+23°C
|
+28°C | 9 h | 7 | 68% | 2 — 2 m/s |
| 2023 |
+33°C
|
+23°C
|
+27°C | 5 h | 7 | 81% | 1 — 2 m/s |
| 2022 |
+32°C
|
+22°C
|
+26°C | 4 h | 7 | 81% | 3 — 4 m/s |
| 2021 |
+30°C
|
+22°C
|
+25°C | 8 h | 7 | 85% | 2 — 3 m/s |
| 2020 |
+32°C
|
+23°C
|
+27°C | 9 h | 7 | 84% | 2 — 2 m/s |
| 2019 |
+29°C
|
+22°C
|
+25°C | 5 h | 6 | 89% | 2 — 2 m/s |