Weather in Vannes on 18 August 2026
Preliminary outlook for 18 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +23°C and nighttime around +16°C, average precipitation 0.2 mm, wind around 4 m/s, humidity around 70%.
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.
+22°C
Weather archive — latest year: 2025
Patchy rain nearby
Weather archive — latest year: 2025
Nighttime: +19°C
Precipitation: 0.1 mm
Wind: 5 — 6 m/s
Humidity: 46%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 10 h |
| UV index | 6 | Cloud cover (avg.) | 25% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +23°C | Dew point (avg.) | +10°C |
| Heat index (avg.) | +24°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 132° → (E) |
Sunrise
07:11
Duration
14 h 07 min
Sunset
21:18
Moonrise
00:48
Moonset
18:15
Moon phase
Last Quarter
Illumination
29%
+17°C
Weather archive — for 2024 year
Patchy rain nearby
Weather archive — for 2024 year
Nighttime: +12°C
Sea temperature: +20°C
Precipitation: 0.1 mm
Wind: 5 — 7 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 12 h |
| UV index | 5 | Cloud cover (avg.) | 28% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +20°C |
| Feels like (avg.) | +17°C | Dew point (avg.) | +11°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 298° ← (WNW) |
Sunrise
07:11
Duration
14 h 06 min
Sunset
21:17
Moonrise
21:05
Moonset
04:50
Moon phase
Waxing Gibbous
Illumination
93%
+20°C
Weather archive — for 2023 year
Clear/Sunny
Weather archive — for 2023 year
Nighttime: +18°C
Precipitation: 0.3 mm
Wind: 3 — 3 m/s
Humidity: 67%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +23°C | Sun hours | 11 h |
| UV index | 5 | Cloud cover (avg.) | 34% |
| Pressure (avg.) | 760 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.) | +20°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 249° ↓ (SSW) |
Sunrise
07:10
Duration
14 h 09 min
Sunset
21:19
Moonrise
09:21
Moonset
22:29
Moon phase
Waxing Crescent
Illumination
9%
+20°C
Weather archive — for 2022 year
Patchy rain nearby
Weather archive — for 2022 year
Nighttime: +16°C
Precipitation: 0.4 mm
Wind: 5 — 5 m/s
Humidity: 76%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 8 h |
| UV index | 4 | Cloud cover (avg.) | 72% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +20°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +21°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 173° ↑ (NNE) |
Sunrise
07:10
Duration
14 h 08 min
Sunset
21:18
Moonrise
Does not rise today
Moonset
14:53
Moon phase
Last Quarter
Illumination
54%
+16°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.) | +19°C | Sun hours | 11 h |
| UV index | 5 | Cloud cover (avg.) | 44% |
| Pressure (avg.) | 767 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +16°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +16°C | Wind chill (avg.) | +16°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 311° ← (WNW) |
Sunrise
07:11
Duration
14 h 07 min
Sunset
21:18
Moonrise
18:34
Moonset
01:45
Moon phase
Waxing Gibbous
Illumination
69%
+19°C
Weather archive — for 2020 year
Patchy rain nearby
Weather archive — for 2020 year
Nighttime: +16°C
Precipitation: 0.2 mm
Wind: 4 — 5 m/s
Humidity: 81%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 8 h |
| UV index | 5 | Cloud cover (avg.) | 39% |
| Pressure (avg.) | 759 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.) | 10 m/s | Wind direction (avg.) | 235° ↓ (SSW) |
Sunrise
07:11
Duration
14 h 07 min
Sunset
21:18
Moonrise
05:54
Moonset
21:25
Moon phase
New Moon
Illumination
0%
Weather in Vannes on 18 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+27°C
|
+19°C
|
+22°C | 10 h | 6 | 46% | 5 — 6 m/s |
| 2024 |
+22°C
|
+12°C
|
+17°C | 12 h | 5 | 69% | 5 — 7 m/s |
| 2023 |
+23°C
|
+18°C
|
+20°C | 11 h | 5 | 67% | 3 — 3 m/s |
| 2022 |
+24°C
|
+16°C
|
+20°C | 8 h | 4 | 76% | 5 — 5 m/s |
| 2021 |
+19°C
|
+13°C
|
+16°C | 11 h | 5 | 82% | 3 — 4 m/s |
| 2020 |
+22°C
|
+16°C
|
+19°C | 8 h | 5 | 81% | 4 — 5 m/s |