Weather in Arcachon on 15 August 2026
Preliminary outlook for 15 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +26°C and nighttime around +19°C, average precipitation 1.3 mm, wind around 3 m/s, humidity around 71%.
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: +22°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 46%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +37°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.) | +30°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +30°C | Wind chill (avg.) | +29°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 77° → (ESE) |
Sunrise
07:07
Duration
14 h 03 min
Sunset
21:10
Moonrise
23:42
Moonset
14:00
Moon phase
Last Quarter
Illumination
51%
+21°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +18°C
Sea temperature: +25°C
Precipitation: 0.1 mm
Wind: 3 — 4 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 13 h |
| UV index | 5 | Cloud cover (avg.) | 38% |
| Pressure (avg.) | 765 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +25°C |
| Feels like (avg.) | +21°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 316° ← (WNW) |
Sunrise
07:07
Duration
14 h 03 min
Sunset
21:10
Moonrise
18:46
Moonset
01:49
Moon phase
Waxing Gibbous
Illumination
71%
+21°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +18°C
Precipitation: 2.1 mm
Wind: 3 — 5 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 13 h |
| UV index | 5 | Cloud cover (avg.) | 53% |
| Pressure (avg.) | 763 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.) | +21°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 258° ↖ (NNW) |
Sunrise
07:07
Duration
14 h 04 min
Sunset
21:11
Moonrise
05:58
Moonset
21:22
Moon phase
New Moon
Illumination
0%
+21°C
Weather archive — for 2022 year
Patchy rain nearby
Weather archive — for 2022 year
Nighttime: +19°C
Precipitation: 0.3 mm
Wind: 4 — 5 m/s
Humidity: 76%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 9 h |
| UV index | 5 | Cloud cover (avg.) | 74% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 265° ← (W) |
Sunrise
07:07
Duration
14 h 04 min
Sunset
21:11
Moonrise
23:10
Moonset
10:51
Moon phase
Waning Gibbous
Illumination
76%
+21°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +19°C
Precipitation: 0.1 mm
Wind: 4 — 5 m/s
Humidity: 77%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 11% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 283° ← (WNW) |
Sunrise
07:07
Duration
14 h 03 min
Sunset
21:10
Moonrise
14:29
Moonset
00:09
Moon phase
First Quarter
Illumination
47%
+21°C
Weather archive — for 2020 year
Moderate or heavy rain shower
Weather archive — for 2020 year
Nighttime: +18°C
Precipitation: 5.2 mm
Wind: 3 — 5 m/s
Humidity: 75%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 8 h |
| UV index | 6 | Cloud cover (avg.) | 66% |
| 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.) | +17°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 166° ↙ (SW) |
Sunrise
07:07
Duration
14 h 03 min
Sunset
21:10
Moonrise
03:04
Moonset
19:04
Moon phase
Waning Crescent
Illumination
16%
Weather in Arcachon on 15 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+37°C
|
+22°C
|
+29°C | 14 h | 7 | 46% | 2 — 3 m/s |
| 2024 |
+24°C
|
+18°C
|
+21°C | 13 h | 5 | 71% | 3 — 4 m/s |
| 2023 |
+25°C
|
+18°C
|
+21°C | 13 h | 5 | 79% | 3 — 5 m/s |
| 2022 |
+24°C
|
+19°C
|
+21°C | 9 h | 5 | 76% | 4 — 5 m/s |
| 2021 |
+23°C
|
+19°C
|
+21°C | 11 h | 6 | 77% | 4 — 5 m/s |
| 2020 |
+25°C
|
+18°C
|
+21°C | 8 h | 6 | 75% | 3 — 5 m/s |