Weather in Saint-Brieuc on 15 August 2026
Preliminary outlook for 15 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +24°C and nighttime around +14°C, average precipitation 0 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: +15°C
Precipitation: 0 mm
Wind: 5 — 6 m/s
Humidity: 71%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 5% |
| Pressure (avg.) | 767 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +21°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 40° ↗ (NE) |
Sunrise
07:05
Duration
14 h 20 min
Sunset
21:25
Moonrise
23:35
Moonset
14:18
Moon phase
Last Quarter
Illumination
51%
+18°C
Weather archive — for 2024 year
Clear/Sunny
Weather archive — for 2024 year
Nighttime: +12°C
Sea temperature: +18°C
Precipitation: 0 mm
Wind: 4 — 6 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 14% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +18°C |
| Feels like (avg.) | +18°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +19°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 250° ↙ (SW) |
Sunrise
07:05
Duration
14 h 20 min
Sunset
21:25
Moonrise
19:15
Moonset
01:33
Moon phase
Waxing Gibbous
Illumination
71%
+16°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +12°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 77%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 11 h |
| UV index | 5 | Cloud cover (avg.) | 27% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +16°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +16°C | Wind chill (avg.) | +16°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 236° ↖ (NNW) |
Sunrise
07:04
Duration
14 h 22 min
Sunset
21:26
Moonrise
05:49
Moonset
21:41
Moon phase
New Moon
Illumination
0%
+20°C
Weather archive — for 2022 year
Partly Cloudy
Weather archive — for 2022 year
Nighttime: +15°C
Precipitation: 0 mm
Wind: 4 — 5 m/s
Humidity: 68%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 12 h |
| UV index | 6 | Cloud cover (avg.) | 49% |
| Pressure (avg.) | 753 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +21°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 235° ↙ (WSW) |
Sunrise
07:04
Duration
14 h 22 min
Sunset
21:26
Moonrise
23:15
Moonset
10:57
Moon phase
Waning Gibbous
Illumination
76%
+18°C
Weather archive — for 2021 year
Clear/Sunny
Weather archive — for 2021 year
Nighttime: +14°C
Precipitation: 0 mm
Wind: 3 — 7 m/s
Humidity: 72%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 5% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +18°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 250° ↙ (WSW) |
Sunrise
07:05
Duration
14 h 20 min
Sunset
21:25
Moonrise
14:45
Moonset
00:08
Moon phase
First Quarter
Illumination
47%
+18°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +14°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 13 h |
| UV index | 5 | Cloud cover (avg.) | 35% |
| Pressure (avg.) | 761 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.) | +19°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 177° ↘ (SE) |
Sunrise
07:05
Duration
14 h 20 min
Sunset
21:25
Moonrise
02:53
Moonset
19:28
Moon phase
Waning Crescent
Illumination
16%
Weather in Saint-Brieuc on 15 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+27°C
|
+15°C
|
+21°C | 14 h | 6 | 71% | 5 — 6 m/s |
| 2024 |
+26°C
|
+12°C
|
+18°C | 14 h | 5 | 71% | 4 — 6 m/s |
| 2023 |
+21°C
|
+12°C
|
+16°C | 11 h | 5 | 77% | 3 — 4 m/s |
| 2022 |
+26°C
|
+15°C
|
+20°C | 12 h | 6 | 68% | 4 — 5 m/s |
| 2021 |
+22°C
|
+14°C
|
+18°C | 14 h | 5 | 72% | 3 — 7 m/s |
| 2020 |
+22°C
|
+14°C
|
+18°C | 13 h | 5 | 79% | 2 — 3 m/s |