Weather in Les Sables-d'Olonne on 17 August 2026
Preliminary outlook for 17 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +22°C and nighttime around +18°C, average precipitation 1.1 mm, wind around 4 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.
+24°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +20°C
Precipitation: 0 mm
Wind: 5 — 6 m/s
Humidity: 51%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +28°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 1% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +25°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +25°C | Wind chill (avg.) | +24°C |
| Wind gusts (max.) | 12 m/s | Wind direction (avg.) | 157° ↘ (SE) |
Sunrise
07:08
Duration
14 h 05 min
Sunset
21:13
Moonrise
00:09
Moonset
16:49
Moon phase
Last Quarter
Illumination
37%
+19°C
Weather archive — for 2024 year
Patchy rain nearby
Weather archive — for 2024 year
Nighttime: +18°C
Sea temperature: +20°C
Precipitation: 4.4 mm
Wind: 4 — 6 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 5 h |
| UV index | 5 | Cloud cover (avg.) | 82% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | +20°C |
| Feels like (avg.) | +19°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +19°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 262° ← (WNW) |
Sunrise
07:08
Duration
14 h 05 min
Sunset
21:13
Moonrise
20:26
Moonset
03:38
Moon phase
Waxing Gibbous
Illumination
86%
+22°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 74%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 13% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +23°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +23°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 242° ↙ (SW) |
Sunrise
07:07
Duration
14 h 07 min
Sunset
21:14
Moonrise
08:12
Moonset
22:09
Moon phase
Waxing Crescent
Illumination
1%
+19°C
Weather archive — for 2022 year
Cloudy
Weather archive — for 2022 year
Nighttime: +18°C
Precipitation: 1 mm
Wind: 3 — 4 m/s
Humidity: 80%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +20°C | Sun hours | 5 h |
| UV index | 4 | Cloud cover (avg.) | 66% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +19°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +19°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 214° ↓ (SSW) |
Sunrise
07:08
Duration
14 h 06 min
Sunset
21:14
Moonrise
23:54
Moonset
13:30
Moon phase
Waning Gibbous
Illumination
61%
+17°C
Weather archive — for 2021 year
Partly Cloudy
Weather archive — for 2021 year
Nighttime: +14°C
Precipitation: 0 mm
Wind: 5 — 6 m/s
Humidity: 76%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +19°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 26% |
| Pressure (avg.) | 767 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +17°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +17°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 274° ↖ (NW) |
Sunrise
07:08
Duration
14 h 05 min
Sunset
21:13
Moonrise
17:10
Moonset
01:05
Moon phase
First Quarter
Illumination
61%
+19°C
Weather archive — for 2020 year
Cloudy
Weather archive — for 2020 year
Nighttime: +17°C
Precipitation: 1.4 mm
Wind: 5 — 5 m/s
Humidity: 83%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 11 h |
| UV index | 4 | Cloud cover (avg.) | 68% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +19°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +19°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 254° ↙ (WSW) |
Sunrise
07:08
Duration
14 h 05 min
Sunset
21:13
Moonrise
04:48
Moonset
20:43
Moon phase
Waning Crescent
Illumination
1%
Weather in Les Sables-d'Olonne on 17 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+28°C
|
+20°C
|
+24°C | 14 h | 6 | 51% | 5 — 6 m/s |
| 2024 |
+21°C
|
+18°C
|
+19°C | 5 h | 5 | 86% | 4 — 6 m/s |
| 2023 |
+25°C
|
+18°C
|
+22°C | 14 h | 6 | 74% | 3 — 4 m/s |
| 2022 |
+20°C
|
+18°C
|
+19°C | 5 h | 4 | 80% | 3 — 4 m/s |
| 2021 |
+19°C
|
+14°C
|
+17°C | 14 h | 5 | 76% | 5 — 6 m/s |
| 2020 |
+21°C
|
+17°C
|
+19°C | 11 h | 4 | 83% | 5 — 5 m/s |