Weather in Biarritz on 15 August 2026
Preliminary outlook for 15 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +25°C and nighttime around +18°C, average precipitation 0.1 mm, wind around 3 m/s, humidity around 75%.
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: +20°C
Precipitation: 0 mm
Wind: 3 — 3 m/s
Humidity: 55%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +38°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 4% |
| 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.) | +16°C |
| Heat index (avg.) | +30°C | Wind chill (avg.) | +29°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 139° → (ESE) |
Sunrise
07:11
Duration
13 h 58 min
Sunset
21:09
Moonrise
23:47
Moonset
13:58
Moon phase
Last Quarter
Illumination
51%
+20°C
Weather archive — for 2024 year
Cloudy
Weather archive — for 2024 year
Nighttime: +18°C
Sea temperature: +22°C
Precipitation: 0.2 mm
Wind: 3 — 3 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 13 h |
| UV index | 4 | Cloud cover (avg.) | 46% |
| Pressure (avg.) | 765 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +22°C |
| Feels like (avg.) | +20°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 4 m/s | Wind direction (avg.) | 325° ↖ (NW) |
Sunrise
07:11
Duration
13 h 58 min
Sunset
21:09
Moonrise
18:41
Moonset
01:56
Moon phase
Waxing Gibbous
Illumination
71%
+20°C
Weather archive — for 2023 year
Overcast
Weather archive — for 2023 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 2 — 4 m/s
Humidity: 84%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 3 h |
| UV index | 5 | Cloud cover (avg.) | 87% |
| 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.) | +18°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 185° ↑ (N) |
Sunrise
07:11
Duration
13 h 59 min
Sunset
21:10
Moonrise
06:04
Moonset
21:20
Moon phase
New Moon
Illumination
0%
+21°C
Weather archive — for 2022 year
Partly Cloudy
Weather archive — for 2022 year
Nighttime: +17°C
Precipitation: 0 mm
Wind: 4 — 5 m/s
Humidity: 74%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 39% |
| Pressure (avg.) | 758 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.) | +21°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 260° ← (W) |
Sunrise
07:11
Duration
13 h 59 min
Sunset
21:10
Moonrise
23:12
Moonset
10:53
Moon phase
Waning Gibbous
Illumination
76%
+20°C
Weather archive — for 2021 year
Overcast
Weather archive — for 2021 year
Nighttime: +18°C
Precipitation: 0.2 mm
Wind: 4 — 4 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 6 h |
| UV index | 6 | Cloud cover (avg.) | 59% |
| Pressure (avg.) | 766 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +21°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 272° ← (WNW) |
Sunrise
07:11
Duration
13 h 58 min
Sunset
21:09
Moonrise
14:28
Moonset
00:12
Moon phase
First Quarter
Illumination
47%
+20°C
Weather archive — for 2020 year
Cloudy
Weather archive — for 2020 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 86%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 6 h |
| UV index | 6 | Cloud cover (avg.) | 75% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +21°C | Dew point (avg.) | +18°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 245° ← (WNW) |
Sunrise
07:11
Duration
13 h 58 min
Sunset
21:09
Moonrise
03:10
Moonset
19:01
Moon phase
Waning Crescent
Illumination
16%
Weather in Biarritz on 15 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+38°C
|
+20°C
|
+29°C | 14 h | 7 | 55% | 3 — 3 m/s |
| 2024 |
+22°C
|
+18°C
|
+20°C | 13 h | 4 | 70% | 3 — 3 m/s |
| 2023 |
+23°C
|
+18°C
|
+20°C | 3 h | 5 | 84% | 2 — 4 m/s |
| 2022 |
+24°C
|
+17°C
|
+21°C | 11 h | 6 | 74% | 4 — 5 m/s |
| 2021 |
+22°C
|
+18°C
|
+20°C | 6 h | 6 | 79% | 4 — 4 m/s |
| 2020 |
+22°C
|
+18°C
|
+20°C | 6 h | 6 | 86% | 3 — 4 m/s |