Weather in Vannes on 20 August 2026
Preliminary outlook for 20 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +23°C and nighttime around +15°C, average precipitation 0.5 mm, wind around 4 m/s, humidity around 77%.
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.
+19°C
Weather archive — latest year: 2025
Patchy light drizzle
Weather archive — latest year: 2025
Nighttime: +16°C
Precipitation: 1.1 mm
Wind: 4 — 7 m/s
Humidity: 81%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 5 h |
| UV index | 4 | Cloud cover (avg.) | 82% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +20°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 181° ↗ (NE) |
Sunrise
07:13
Duration
14 h 01 min
Sunset
21:14
Moonrise
02:56
Moonset
20:04
Moon phase
Waning Crescent
Illumination
15%
+19°C
Weather archive — for 2024 year
Patchy rain nearby
Weather archive — for 2024 year
Nighttime: +13°C
Sea temperature: +20°C
Precipitation: 0.3 mm
Wind: 5 — 7 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 8 h |
| UV index | 5 | Cloud cover (avg.) | 59% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +20°C |
| Feels like (avg.) | +20°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 252° ← (W) |
Sunrise
07:14
Duration
14 h 00 min
Sunset
21:14
Moonrise
21:47
Moonset
07:30
Moon phase
Full Moon
Illumination
100%
+19°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +15°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 74%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 10% |
| Pressure (avg.) | 767 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.) | 211° ↙ (WSW) |
Sunrise
07:13
Duration
14 h 02 min
Sunset
21:15
Moonrise
11:32
Moonset
22:56
Moon phase
Waxing Crescent
Illumination
23%
+17°C
Weather archive — for 2022 year
Partly Cloudy
Weather archive — for 2022 year
Nighttime: +13°C
Precipitation: 0 mm
Wind: 3 — 5 m/s
Humidity: 75%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 14 h |
| UV index | 5 | Cloud cover (avg.) | 22% |
| Pressure (avg.) | 766 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +17°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +17°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 225° ← (W) |
Sunrise
07:13
Duration
14 h 02 min
Sunset
21:15
Moonrise
00:48
Moonset
17:18
Moon phase
Last Quarter
Illumination
39%
+18°C
Weather archive — for 2021 year
Cloudy
Weather archive — for 2021 year
Nighttime: +15°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 73%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 13 h |
| UV index | 5 | Cloud cover (avg.) | 27% |
| Pressure (avg.) | 762 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.) | 5 m/s | Wind direction (avg.) | 149° ↘ (SE) |
Sunrise
07:13
Duration
14 h 01 min
Sunset
21:14
Moonrise
20:30
Moonset
03:46
Moon phase
Waxing Gibbous
Illumination
83%
+19°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +18°C
Precipitation: 1.4 mm
Wind: 6 — 9 m/s
Humidity: 82%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 13 h |
| UV index | 4 | Cloud cover (avg.) | 60% |
| Pressure (avg.) | 754 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +20°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 17 m/s | Wind direction (avg.) | 215° ↓ (SSW) |
Sunrise
07:14
Duration
14 h 00 min
Sunset
21:14
Moonrise
08:19
Moonset
22:18
Moon phase
Waxing Crescent
Illumination
6%
Weather in Vannes on 20 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+22°C
|
+16°C
|
+19°C | 5 h | 4 | 81% | 4 — 7 m/s |
| 2024 |
+22°C
|
+13°C
|
+19°C | 8 h | 5 | 76% | 5 — 7 m/s |
| 2023 |
+24°C
|
+15°C
|
+19°C | 14 h | 5 | 74% | 3 — 4 m/s |
| 2022 |
+23°C
|
+13°C
|
+17°C | 14 h | 5 | 75% | 3 — 5 m/s |
| 2021 |
+23°C
|
+15°C
|
+18°C | 13 h | 5 | 73% | 2 — 3 m/s |
| 2020 |
+21°C
|
+18°C
|
+19°C | 13 h | 4 | 82% | 6 — 9 m/s |