Weather in Grande-Synthe on 31 July 2026
Preliminary outlook for 31 July 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +23°C and nighttime around +17°C, average precipitation 0.6 mm, wind around 6 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.
+18°C
Weather archive — latest year: 2025
Patchy rain nearby
Weather archive — latest year: 2025
Nighttime: +17°C
Precipitation: 0.6 mm
Wind: 5 — 6 m/s
Humidity: 82%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +20°C | Sun hours | 12 h |
| UV index | 4 | Cloud cover (avg.) | 63% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +18°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 268° ← (WNW) |
Sunrise
06:15
Duration
15 h 23 min
Sunset
21:38
Moonrise
14:26
Moonset
23:51
Moon phase
Waxing Crescent
Illumination
36%
+20°C
Weather archive — for 2024 year
Cloudy
Weather archive — for 2024 year
Nighttime: +18°C
Sea temperature: +19°C
Precipitation: 0.4 mm
Wind: 4 — 5 m/s
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 13 h |
| UV index | 5 | Cloud cover (avg.) | 50% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | +19°C |
| Feels like (avg.) | +20°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +20°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 54° ↗ (ENE) |
Sunrise
06:16
Duration
15 h 22 min
Sunset
21:38
Moonrise
01:16
Moonset
19:14
Moon phase
Waning Crescent
Illumination
26%
+18°C
Weather archive — for 2023 year
Patchy rain nearby
Weather archive — for 2023 year
Nighttime: +17°C
Precipitation: 2.4 mm
Wind: 10 — 10 m/s
Humidity: 88%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +20°C | Sun hours | 7 h |
| UV index | 4 | Cloud cover (avg.) | 84% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +18°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +18°C |
| Wind gusts (max.) | 15 m/s | Wind direction (avg.) | 237° ↙ (WSW) |
Sunrise
06:14
Duration
15 h 25 min
Sunset
21:39
Moonrise
21:27
Moonset
03:27
Moon phase
Waxing Gibbous
Illumination
89%
+20°C
Weather archive — for 2022 year
Overcast
Weather archive — for 2022 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 7 — 9 m/s
Humidity: 81%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 1 h |
| UV index | 5 | Cloud cover (avg.) | 77% |
| Pressure (avg.) | 764 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.) | +20°C | Wind chill (avg.) | +20°C |
| Wind gusts (max.) | 13 m/s | Wind direction (avg.) | 257° ← (W) |
Sunrise
06:15
Duration
15 h 24 min
Sunset
21:39
Moonrise
09:03
Moonset
23:16
Moon phase
Waxing Crescent
Illumination
12%
+17°C
Weather archive — for 2021 year
Partly Cloudy
Weather archive — for 2021 year
Nighttime: +15°C
Precipitation: 0.1 mm
Wind: 7 — 10 m/s
Humidity: 76%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +19°C | Sun hours | 15 h |
| UV index | 4 | Cloud cover (avg.) | 41% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +17°C | Dew point (avg.) | +13°C |
| Heat index (avg.) | +17°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 14 m/s | Wind direction (avg.) | 256° ↙ (WSW) |
Sunrise
06:15
Duration
15 h 23 min
Sunset
21:38
Moonrise
00:37
Moonset
15:02
Moon phase
Last Quarter
Illumination
51%
+24°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +18°C
Precipitation: 0 mm
Wind: 5 — 6 m/s
Humidity: 63%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 16% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +24°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +24°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 144° ↘ (SE) |
Sunrise
06:16
Duration
15 h 22 min
Sunset
21:38
Moonrise
19:19
Moonset
02:25
Moon phase
Waxing Gibbous
Illumination
72%
Weather in Grande-Synthe on 31 July in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+20°C
|
+17°C
|
+18°C | 12 h | 4 | 82% | 5 — 6 m/s |
| 2024 |
+22°C
|
+18°C
|
+20°C | 13 h | 5 | 85% | 4 — 5 m/s |
| 2023 |
+20°C
|
+17°C
|
+18°C | 7 h | 4 | 88% | 10 — 10 m/s |
| 2022 |
+22°C
|
+18°C
|
+20°C | 1 h | 5 | 81% | 7 — 9 m/s |
| 2021 |
+19°C
|
+15°C
|
+17°C | 15 h | 4 | 76% | 7 — 10 m/s |
| 2020 |
+32°C
|
+18°C
|
+24°C | 14 h | 6 | 63% | 5 — 6 m/s |