Weather in Concarneau 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 +15°C, average precipitation 0.3 mm, wind around 4 m/s, humidity around 74%.
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: +16°C
Precipitation: 0.1 mm
Wind: 3 — 5 m/s
Humidity: 50%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +28°C | Sun hours | 13 h |
| UV index | 6 | Cloud cover (avg.) | 28% |
| 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.) | +10°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 153° ↘ (SSE) |
Sunrise
07:15
Duration
14 h 08 min
Sunset
21:23
Moonrise
00:51
Moonset
18:21
Moon phase
Last Quarter
Illumination
29%
+16°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +12°C
Sea temperature: +18°C
Precipitation: 0.1 mm
Wind: 3 — 5 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 12 h |
| UV index | 5 | Cloud cover (avg.) | 31% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +18°C |
| Feels like (avg.) | +16°C | Dew point (avg.) | +11°C |
| Heat index (avg.) | +16°C | Wind chill (avg.) | +16°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 308° ← (WNW) |
Sunrise
07:15
Duration
14 h 08 min
Sunset
21:23
Moonrise
21:11
Moonset
04:54
Moon phase
Waxing Gibbous
Illumination
93%
+18°C
Weather archive — for 2023 year
Cloudy
Weather archive — for 2023 year
Nighttime: +15°C
Precipitation: 0 mm
Wind: 4 — 6 m/s
Humidity: 81%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 8 h |
| UV index | 4 | Cloud cover (avg.) | 75% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 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.) | 11 m/s | Wind direction (avg.) | 219° ↘ (SSE) |
Sunrise
07:14
Duration
14 h 10 min
Sunset
21:24
Moonrise
09:26
Moonset
22:34
Moon phase
Waxing Crescent
Illumination
9%
+19°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +16°C
Precipitation: 0.1 mm
Wind: 5 — 6 m/s
Humidity: 73%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 12 h |
| UV index | 5 | Cloud cover (avg.) | 45% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +19°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +19°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 335° ↖ (NNW) |
Sunrise
07:15
Duration
14 h 09 min
Sunset
21:24
Moonrise
Does not rise today
Moonset
14:59
Moon phase
Last Quarter
Illumination
54%
+15°C
Weather archive — for 2021 year
Cloudy
Weather archive — for 2021 year
Nighttime: +13°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 82%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +18°C | Sun hours | 4 h |
| UV index | 5 | Cloud cover (avg.) | 68% |
| Pressure (avg.) | 767 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +15°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +16°C | Wind chill (avg.) | +15°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 313° ↖ (NW) |
Sunrise
07:15
Duration
14 h 08 min
Sunset
21:23
Moonrise
18:40
Moonset
01:49
Moon phase
Waxing Gibbous
Illumination
69%
+19°C
Weather archive — for 2020 year
Moderate rain at times
Weather archive — for 2020 year
Nighttime: +16°C
Precipitation: 1.4 mm
Wind: 4 — 5 m/s
Humidity: 83%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 8 h |
| UV index | 5 | Cloud cover (avg.) | 64% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 7 km | Sea temperature | — |
| Feels like (avg.) | +19°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +19°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 223° ↙ (SW) |
Sunrise
07:15
Duration
14 h 08 min
Sunset
21:23
Moonrise
05:58
Moonset
21:31
Moon phase
New Moon
Illumination
0%
Weather in Concarneau on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+28°C
|
+16°C
|
+21°C | 13 h | 6 | 50% | 3 — 5 m/s |
| 2024 |
+21°C
|
+12°C
|
+16°C | 12 h | 5 | 73% | 3 — 5 m/s |
| 2023 |
+22°C
|
+15°C
|
+18°C | 8 h | 4 | 81% | 4 — 6 m/s |
| 2022 |
+22°C
|
+16°C
|
+19°C | 12 h | 5 | 73% | 5 — 6 m/s |
| 2021 |
+18°C
|
+13°C
|
+15°C | 4 h | 5 | 82% | 3 — 4 m/s |
| 2020 |
+22°C
|
+16°C
|
+19°C | 8 h | 5 | 83% | 4 — 5 m/s |