Weather in Cayeux-sur-Mer on 18 August 2026
Preliminary outlook for 18 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +24°C and nighttime around +15°C, average precipitation 0 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.
+20°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +13°C
Precipitation: 0 mm
Wind: 4 — 5 m/s
Humidity: 64%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 15 h |
| UV index | 6 | Cloud cover (avg.) | 8% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +20°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 66° ↗ (ENE) |
Sunrise
06:48
Duration
14 h 19 min
Sunset
21:07
Moonrise
00:15
Moonset
18:14
Moon phase
Last Quarter
Illumination
29%
+17°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +13°C
Sea temperature: +18°C
Precipitation: 0 mm
Wind: 4 — 6 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +20°C | Sun hours | 15 h |
| UV index | 5 | Cloud cover (avg.) | 36% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +18°C |
| Feels like (avg.) | +17°C | Dew point (avg.) | +11°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 287° ← (WNW) |
Sunrise
06:48
Duration
14 h 18 min
Sunset
21:06
Moonrise
20:58
Moonset
04:20
Moon phase
Waxing Gibbous
Illumination
93%
+22°C
Weather archive — for 2023 year
Cloudy
Weather archive — for 2023 year
Nighttime: +17°C
Precipitation: 0 mm
Wind: 4 — 4 m/s
Humidity: 75%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 8 h |
| UV index | 6 | Cloud cover (avg.) | 47% |
| 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.) | +18°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 158° ↓ (S) |
Sunrise
06:47
Duration
14 h 21 min
Sunset
21:08
Moonrise
09:00
Moonset
22:13
Moon phase
Waxing Crescent
Illumination
9%
+20°C
Weather archive — for 2022 year
Partly Cloudy
Weather archive — for 2022 year
Nighttime: +16°C
Precipitation: 0 mm
Wind: 3 — 6 m/s
Humidity: 78%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +25°C | Sun hours | 13 h |
| UV index | 4 | Cloud cover (avg.) | 58% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +21°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 95° ↑ (NNE) |
Sunrise
06:48
Duration
14 h 19 min
Sunset
21:07
Moonrise
23:53
Moonset
14:44
Moon phase
Last Quarter
Illumination
54%
+17°C
Weather archive — for 2021 year
Patchy rain nearby
Weather archive — for 2021 year
Nighttime: +14°C
Precipitation: 0.2 mm
Wind: 4 — 5 m/s
Humidity: 82%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +19°C | Sun hours | 5 h |
| UV index | 4 | Cloud cover (avg.) | 79% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +16°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +16°C | Wind chill (avg.) | +16°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 283° ← (WNW) |
Sunrise
06:48
Duration
14 h 19 min
Sunset
21:07
Moonrise
18:30
Moonset
01:15
Moon phase
Waxing Gibbous
Illumination
69%
+18°C
Weather archive — for 2020 year
Overcast
Weather archive — for 2020 year
Nighttime: +15°C
Precipitation: 0 mm
Wind: 4 — 4 m/s
Humidity: 80%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 12 h |
| UV index | 4 | Cloud cover (avg.) | 54% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +18°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 249° ↙ (WSW) |
Sunrise
06:48
Duration
14 h 18 min
Sunset
21:06
Moonrise
05:26
Moonset
21:16
Moon phase
New Moon
Illumination
0%
Weather in Cayeux-sur-Mer on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+29°C
|
+13°C
|
+20°C | 15 h | 6 | 64% | 4 — 5 m/s |
| 2024 |
+20°C
|
+13°C
|
+17°C | 15 h | 5 | 68% | 4 — 6 m/s |
| 2023 |
+26°C
|
+17°C
|
+22°C | 8 h | 6 | 75% | 4 — 4 m/s |
| 2022 |
+25°C
|
+16°C
|
+20°C | 13 h | 4 | 78% | 3 — 6 m/s |
| 2021 |
+19°C
|
+14°C
|
+17°C | 5 h | 4 | 82% | 4 — 5 m/s |
| 2020 |
+22°C
|
+15°C
|
+18°C | 12 h | 4 | 80% | 4 — 4 m/s |