Weather in Les Sables-d'Olonne on 18 August 2026
Preliminary outlook for 18 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +22°C and nighttime around +16°C, average precipitation 0.3 mm, wind around 4 m/s, humidity around 73%.
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.
+21°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +18°C
Precipitation: 0 mm
Wind: 4 — 6 m/s
Humidity: 61%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 13 h |
| UV index | 6 | Cloud cover (avg.) | 7% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +23°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 165° ↓ (S) |
Sunrise
07:09
Duration
14 h 03 min
Sunset
21:12
Moonrise
00:50
Moonset
18:04
Moon phase
Last Quarter
Illumination
29%
+17°C
Weather archive — for 2024 year
Patchy rain nearby
Weather archive — for 2024 year
Nighttime: +13°C
Sea temperature: +20°C
Precipitation: 0.1 mm
Wind: 5 — 6 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +20°C | Sun hours | 11 h |
| UV index | 4 | Cloud cover (avg.) | 48% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +20°C |
| 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.) | 317° ↖ (NW) |
Sunrise
07:10
Duration
14 h 01 min
Sunset
21:11
Moonrise
20:57
Moonset
04:52
Moon phase
Waxing Gibbous
Illumination
93%
+21°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +19°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 63%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 12 h |
| UV index | 6 | Cloud cover (avg.) | 33% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +23°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +23°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 285° ↓ (SSW) |
Sunrise
07:09
Duration
14 h 03 min
Sunset
21:12
Moonrise
09:18
Moonset
22:24
Moon phase
Waxing Crescent
Illumination
9%
+19°C
Weather archive — for 2022 year
Patchy rain nearby
Weather archive — for 2022 year
Nighttime: +16°C
Precipitation: 1.2 mm
Wind: 5 — 7 m/s
Humidity: 85%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 12 h |
| UV index | 4 | Cloud cover (avg.) | 66% |
| Pressure (avg.) | 761 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.) | 12 m/s | Wind direction (avg.) | 279° ↘ (SSE) |
Sunrise
07:09
Duration
14 h 03 min
Sunset
21:12
Moonrise
Does not rise today
Moonset
14:45
Moon phase
Last Quarter
Illumination
54%
+17°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +15°C
Precipitation: 0 mm
Wind: 4 — 4 m/s
Humidity: 77%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +19°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 14% |
| 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.) | +13°C |
| Heat index (avg.) | +17°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 220° ↙ (WSW) |
Sunrise
07:09
Duration
14 h 03 min
Sunset
21:12
Moonrise
18:24
Moonset
01:46
Moon phase
Waxing Gibbous
Illumination
69%
+20°C
Weather archive — for 2020 year
Patchy rain nearby
Weather archive — for 2020 year
Nighttime: +17°C
Precipitation: 0.3 mm
Wind: 3 — 5 m/s
Humidity: 82%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 3 h |
| UV index | 4 | Cloud cover (avg.) | 81% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +20°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 263° ↙ (SW) |
Sunrise
07:10
Duration
14 h 01 min
Sunset
21:11
Moonrise
05:54
Moonset
21:18
Moon phase
New Moon
Illumination
0%
Weather in Les Sables-d'Olonne on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+24°C
|
+18°C
|
+21°C | 13 h | 6 | 61% | 4 — 6 m/s |
| 2024 |
+20°C
|
+13°C
|
+17°C | 11 h | 4 | 71% | 5 — 6 m/s |
| 2023 |
+25°C
|
+19°C
|
+21°C | 12 h | 6 | 63% | 3 — 4 m/s |
| 2022 |
+21°C
|
+16°C
|
+19°C | 12 h | 4 | 85% | 5 — 7 m/s |
| 2021 |
+19°C
|
+15°C
|
+17°C | 14 h | 5 | 77% | 4 — 4 m/s |
| 2020 |
+22°C
|
+17°C
|
+20°C | 3 h | 4 | 82% | 3 — 5 m/s |