Weather in Saint-Brieuc on 20 August 2026
Preliminary outlook for 20 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +21°C and nighttime around +14°C, average precipitation 0.2 mm, wind around 4 m/s, humidity around 79%.
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.
+17°C
Weather archive — latest year: 2025
Light rain shower
Weather archive — latest year: 2025
Nighttime: +16°C
Precipitation: 0.7 mm
Wind: 6 — 7 m/s
Humidity: 94%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +18°C | Sun hours | 2 h |
| UV index | 4 | Cloud cover (avg.) | 94% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +17°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +17°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 113° ↗ (NE) |
Sunrise
07:12
Duration
14 h 04 min
Sunset
21:16
Moonrise
02:51
Moonset
20:08
Moon phase
Waning Crescent
Illumination
15%
+17°C
Weather archive — for 2024 year
Patchy rain nearby
Weather archive — for 2024 year
Nighttime: +11°C
Sea temperature: +18°C
Precipitation: 0.2 mm
Wind: 6 — 8 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +20°C | Sun hours | 8 h |
| UV index | 4 | Cloud cover (avg.) | 72% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +18°C |
| 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.) | 255° ← (WNW) |
Sunrise
07:12
Duration
14 h 04 min
Sunset
21:16
Moonrise
21:49
Moonset
07:28
Moon phase
Full Moon
Illumination
100%
+18°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +14°C
Precipitation: 0 mm
Wind: 2 — 4 m/s
Humidity: 74%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 3% |
| Pressure (avg.) | 767 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +19°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 177° ↙ (WSW) |
Sunrise
07:11
Duration
14 h 06 min
Sunset
21:17
Moonrise
11:32
Moonset
22:55
Moon phase
Waxing Crescent
Illumination
23%
+17°C
Weather archive — for 2022 year
Partly Cloudy
Weather archive — for 2022 year
Nighttime: +12°C
Precipitation: 0 mm
Wind: 3 — 3 m/s
Humidity: 72%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 38% |
| Pressure (avg.) | 766 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.) | +17°C | Wind chill (avg.) | +16°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 292° ↖ (NW) |
Sunrise
07:11
Duration
14 h 06 min
Sunset
21:17
Moonrise
00:44
Moonset
17:23
Moon phase
Last Quarter
Illumination
39%
+18°C
Weather archive — for 2021 year
Patchy rain nearby
Weather archive — for 2021 year
Nighttime: +14°C
Precipitation: 0.3 mm
Wind: 2 — 3 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 12 h |
| UV index | 4 | Cloud cover (avg.) | 60% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 7 km | Sea temperature | — |
| Feels like (avg.) | +18°C | Dew point (avg.) | +14°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 4 m/s | Wind direction (avg.) | 157° → (ESE) |
Sunrise
07:12
Duration
14 h 04 min
Sunset
21:16
Moonrise
20:34
Moonset
03:42
Moon phase
Waxing Gibbous
Illumination
83%
+19°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +16°C
Precipitation: 0.1 mm
Wind: 6 — 8 m/s
Humidity: 78%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 14 h |
| UV index | 4 | Cloud cover (avg.) | 40% |
| Pressure (avg.) | 752 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.) | 15 m/s | Wind direction (avg.) | 207° ↓ (SSW) |
Sunrise
07:12
Duration
14 h 04 min
Sunset
21:16
Moonrise
08:17
Moonset
22:20
Moon phase
Waxing Crescent
Illumination
6%
Weather in Saint-Brieuc on 20 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+18°C
|
+16°C
|
+17°C | 2 h | 4 | 94% | 6 — 7 m/s |
| 2024 |
+20°C
|
+11°C
|
+17°C | 8 h | 4 | 76% | 6 — 8 m/s |
| 2023 |
+24°C
|
+14°C
|
+18°C | 14 h | 5 | 74% | 2 — 4 m/s |
| 2022 |
+22°C
|
+12°C
|
+17°C | 14 h | 5 | 72% | 3 — 3 m/s |
| 2021 |
+23°C
|
+14°C
|
+18°C | 12 h | 4 | 79% | 2 — 3 m/s |
| 2020 |
+21°C
|
+16°C
|
+19°C | 14 h | 4 | 78% | 6 — 8 m/s |