Weather in Concarneau on 17 August 2026
Preliminary outlook for 17 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +23°C and nighttime around +15°C, average precipitation 0.1 mm, wind around 4 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.
+23°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +17°C
Precipitation: 0 mm
Wind: 4 — 7 m/s
Humidity: 50%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 1% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +23°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +23°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 136° ↘ (SSE) |
Sunrise
07:14
Duration
14 h 11 min
Sunset
21:25
Moonrise
00:11
Moonset
17:06
Moon phase
Last Quarter
Illumination
37%
+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 — 5 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 11 h |
| UV index | 4 | Cloud cover (avg.) | 66% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +18°C |
| Feels like (avg.) | +17°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 244° ↖ (NNW) |
Sunrise
07:14
Duration
14 h 10 min
Sunset
21:24
Moonrise
20:42
Moonset
03:40
Moon phase
Waxing Gibbous
Illumination
86%
+19°C
Weather archive — for 2023 year
Partly Cloudy
Weather archive — for 2023 year
Nighttime: +16°C
Precipitation: 0 mm
Wind: 3 — 3 m/s
Humidity: 69%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 14 h |
| UV index | 4 | Cloud cover (avg.) | 39% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +20°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +19°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 117° ↘ (SSE) |
Sunrise
07:13
Duration
14 h 13 min
Sunset
21:26
Moonrise
08:18
Moonset
22:20
Moon phase
Waxing Crescent
Illumination
1%
+18°C
Weather archive — for 2022 year
Patchy rain nearby
Weather archive — for 2022 year
Nighttime: +15°C
Precipitation: 0.3 mm
Wind: 5 — 8 m/s
Humidity: 78%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 10 h |
| UV index | 4 | Cloud cover (avg.) | 73% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +18°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +19°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 99° ↑ (NNE) |
Sunrise
07:13
Duration
14 h 12 min
Sunset
21:25
Moonrise
23:59
Moonset
13:41
Moon phase
Waning Gibbous
Illumination
61%
+16°C
Weather archive — for 2021 year
Patchy rain nearby
Weather archive — for 2021 year
Nighttime: +13°C
Precipitation: 0.1 mm
Wind: 4 — 6 m/s
Humidity: 73%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +19°C | Sun hours | 14 h |
| UV index | 4 | Cloud cover (avg.) | 57% |
| Pressure (avg.) | 768 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +16°C | Dew point (avg.) | +11°C |
| Heat index (avg.) | +16°C | Wind chill (avg.) | +16°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 321° ↖ (NW) |
Sunrise
07:14
Duration
14 h 11 min
Sunset
21:25
Moonrise
17:25
Moonset
01:09
Moon phase
First Quarter
Illumination
61%
+17°C
Weather archive — for 2020 year
Patchy rain nearby
Weather archive — for 2020 year
Nighttime: +14°C
Precipitation: 0.1 mm
Wind: 3 — 4 m/s
Humidity: 83%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 11 h |
| UV index | 4 | Cloud cover (avg.) | 70% |
| Pressure (avg.) | 758 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +17°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 250° ↙ (SW) |
Sunrise
07:14
Duration
14 h 10 min
Sunset
21:24
Moonrise
04:52
Moonset
20:57
Moon phase
Waning Crescent
Illumination
1%
Weather in Concarneau on 17 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+29°C
|
+17°C
|
+23°C | 14 h | 6 | 50% | 4 — 7 m/s |
| 2024 |
+22°C
|
+13°C
|
+17°C | 11 h | 4 | 73% | 4 — 5 m/s |
| 2023 |
+24°C
|
+16°C
|
+19°C | 14 h | 4 | 69% | 3 — 3 m/s |
| 2022 |
+22°C
|
+15°C
|
+18°C | 10 h | 4 | 78% | 5 — 8 m/s |
| 2021 |
+19°C
|
+13°C
|
+16°C | 14 h | 4 | 73% | 4 — 6 m/s |
| 2020 |
+21°C
|
+14°C
|
+17°C | 11 h | 4 | 83% | 3 — 4 m/s |