Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Portsmouth is from April, May, October. — consistent weather climate
🌦Humid
| Score | 26 | 35 | 60 | 84 | 78 | 73 | 52 | 64 | 76 | 85 | 73 | 41 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Cold | Cold | Cool & rainy | Mild | Humid | Humid | Hot & rainy | Hot & rainy | Humid | Mild | Mild | Cold |
| Temperature | 2–11°C | 3–13°C | 7–17°C | 10–21°C | 15–24°C | 19–28°C | 23–31°C | 22–30°C | 19–26°C | 13–22°C | 8–17°C | 4–13°C |
| Feels like | -2–8°C | -1–9°C | 3–15°C | 7–19°C | 13–24°C | 20–31°C | 26–36°C | 25–34°C | 20–28°C | 12–22°C | 5–15°C | 0–10°C |
| Precipitation | 108mm 9 days | 92mm 9 days | 107mm 8 days | 83mm 6 days | 88mm 10 days | 126mm 9 days | 122mm 11 days | 121mm 12 days | 118mm 10 days | 68mm 7 days | 73mm 5 days | 96mm 7 days |
| Sunshine | 6.8h ☀︎ 68% | 6.7h ☀︎ 62% | 8.4h ☀︎ 70% | 10.2h ☀︎ 78% | 10.2h ☀︎ 72% | 11.8h ☀︎ 80% | 11.9h ☀︎ 83% | 10.6h ☀︎ 79% | 9.2h ☀︎ 74% | 8.6h ☀︎ 76% | 8.0h ☀︎ 79% | 7.0h ☀︎ 73% |
| Wind | W · 22 km/h | W · 23 km/h | W · 24 km/h | SW · 23 km/h | N · 21 km/h | S · 19 km/h | SW · 17 km/h | S · 16 km/h | NE · 19 km/h | NW · 18 km/h | NW · 19 km/h | W · 19 km/h |
| Humidity (%) | 73% | 72% | 69% | 66% | 73% | 74% | 77% | 79% | 77% | 77% | 73% | 75% |
| Day length | 10.0h | 10.9h | 12.0h | 13.2h | 14.1h | 14.6h | 14.4h | 13.5h | 12.4h | 11.2h | 10.2h | 9.7h |