Weather in San Jose on 17 August 2026
Preliminary outlook for 17 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +31°C and nighttime around +24°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.
+29°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +25°C
Precipitation: 0 mm
Wind: 3 — 3 m/s
Humidity: 42%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 12 h |
| UV index | 7 | Cloud cover (avg.) | 20% |
| Pressure (avg.) | 762 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.) | +29°C |
| Wind gusts (max.) | 4 m/s | Wind direction (avg.) | 225° ↓ (SSW) |
Sunrise
07:27
Duration
13 h 30 min
Sunset
20:57
Moonrise
00:46
Moonset
16:09
Moon phase
Last Quarter
Illumination
37%
+27°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +24°C
Sea temperature: +26°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 13 h |
| UV index | 7 | Cloud cover (avg.) | 1% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +26°C |
| Feels like (avg.) | +29°C | Dew point (avg.) | +18°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 142° ↓ (S) |
Sunrise
07:27
Duration
13 h 30 min
Sunset
20:57
Moonrise
19:50
Moonset
04:22
Moon phase
Waxing Gibbous
Illumination
86%
+28°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: 59%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 13 h |
| UV index | 7 | Cloud cover (avg.) | 6% |
| 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.) | +18°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 198° ↓ (S) |
Sunrise
07:27
Duration
13 h 31 min
Sunset
20:58
Moonrise
08:30
Moonset
21:58
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: 48%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 13 h |
| UV index | 7 | Cloud cover (avg.) | 5% |
| Pressure (avg.) | 756 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +28°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +28°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 249° ↙ (SW) |
Sunrise
07:27
Duration
13 h 30 min
Sunset
20:57
Moonrise
Does not rise today
Moonset
13:15
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: 5 — 7 m/s
Humidity: 67%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 13 h |
| UV index | 7 | Cloud cover (avg.) | 0% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +20°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 78° → (E) |
Sunrise
07:27
Duration
13 h 30 min
Sunset
20:57
Moonrise
16:36
Moonset
01:37
Moon phase
First Quarter
Illumination
61%
+27°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +23°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 45%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 13 h |
| UV index | 7 | Cloud cover (avg.) | 0% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +28°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +28°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 174° ↘ (SSE) |
Sunrise
07:27
Duration
13 h 30 min
Sunset
20:57
Moonrise
05:23
Moonset
20:14
Moon phase
Waning Crescent
Illumination
1%
Weather in San Jose on 17 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+32°C
|
+25°C
|
+29°C | 12 h | 7 | 42% | 3 — 3 m/s |
| 2024 |
+30°C
|
+24°C
|
+27°C | 13 h | 7 | 59% | 2 — 3 m/s |
| 2023 |
+32°C
|
+23°C
|
+28°C | 13 h | 7 | 59% | 2 — 3 m/s |
| 2022 |
+32°C
|
+23°C
|
+27°C | 13 h | 7 | 48% | 3 — 5 m/s |
| 2021 |
+30°C
|
+24°C
|
+27°C | 13 h | 7 | 67% | 5 — 7 m/s |
| 2020 |
+31°C
|
+23°C
|
+27°C | 13 h | 7 | 45% | 2 — 3 m/s |