Weather in Portsmouth, United Kingdom
Historical monthly conditions · 2021–2025
Monthly averages
Average daily air-temperature lows/highs and peak wind gusts. Rain is the average monthly total.
| Month | Avg low | Avg high | Rain | Cloud cover | Avg peak gust |
|---|---|---|---|---|---|
| January | 4°C | 8°C | 83.6 mm | 69% | 47.7 km/h |
| February | 5°C | 9°C | 64.8 mm | 73% | 48.1 km/h |
| March | 6°C | 10°C | 60.0 mm | 65% | 44.0 km/h |
| April | 7°C | 12°C | 42.9 mm | 58% | 42.6 km/h |
| May | 10°C | 16°C | 54.8 mm | 62% | 40.3 km/h |
| June | 13°C | 19°C | 65.5 mm | 56% | 39.3 km/h |
| July | 15°C | 21°C | 61.5 mm | 59% | 40.6 km/h |
| August | 15°C | 21°C | 50.8 mm | 60% | 40.5 km/h |
| September | 14°C | 19°C | 94.3 mm | 65% | 41.5 km/h |
| October | 12°C | 16°C | 112.7 mm | 74% | 46.0 km/h |
| November | 8°C | 12°C | 99.2 mm | 69% | 48.3 km/h |
| December | 7°C | 10°C | 87.4 mm | 75% | 51.6 km/h |
Weather match by month
Feels like 15°C–30°C · cloud ≤60% · rain ≤0.1 mm/h · gust ≤50 km/h
Feels-like temperature accounts for humidity and wind in shade. Percentages cover 08:00–20:00 local solar time.
| Month | Match rate | |
|---|---|---|
| January | 0.0% | |
| February | 0.0% | |
| March | <0.1% | |
| April | 1.3% | |
| May | 6.3% | |
| June | 25.8% | |
| July | 31.0% | |
| August | 32.3% | |
| September | 17.5% | |
| October | 1.8% | |
| November | <0.1% | |
| December | 0.0% |
About this location and data
- Urban-centre population
- 488,385
- Elevation
- 28 m
- Coordinates
- 50.83°N, 1.08°W
- Urban area
- 157 km²
Weather averages use 3 ERA5 grid cells, weighted by the area of the urban centre in each cell.
2021-2025 recent-weather sample (not a 30-year normal).
How the weather scores are calculatedNearby places with higher scores
Annual results for the default weather criteria: