Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Portsmouth is from June, September, October. — consistent weather climate
☀️Pleasant
| Score | 11 | 15 | 49 | 71 | 75 | 80 | 64 | 71 | 84 | 85 | 50 | 17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Cold | Cold | Cold | Mild | Humid | Pleasant | Humid | Humid | Humid | Mild | Cold | Cold |
| Temperature | -2–6°C | -1–10°C | 4–15°C | 7–18°C | 13–23°C | 17–28°C | 20–31°C | 19–30°C | 16–26°C | 10–20°C | 4–14°C | 1–9°C |
| Feels like | -6–3°C | -5–6°C | 0–12°C | 4–17°C | 12–24°C | 18–30°C | 23–34°C | 21–32°C | 16–27°C | 9–19°C | 1–11°C | -3–6°C |
| Precipitation | 90mm 12 days | 107mm 10 days | 91mm 9 days | 99mm 10 days | 120mm 12 days | 80mm 9 days | 86mm 9 days | 104mm 10 days | 82mm 7 days | 63mm 8 days | 63mm 7 days | 79mm 9 days |
| Sunshine | 4.3h ☀︎ 44% | 6.1h ☀︎ 57% | 7.7h ☀︎ 64% | 8.9h ☀︎ 68% | 9.1h ☀︎ 63% | 12.1h ☀︎ 81% | 11.8h ☀︎ 81% | 11.1h ☀︎ 81% | 9.8h ☀︎ 79% | 8.5h ☀︎ 76% | 6.9h ☀︎ 69% | 4.7h ☀︎ 49% |
| Wind | W · 16 km/h | W · 17 km/h | W · 18 km/h | SW · 17 km/h | SW · 15 km/h | SW · 14 km/h | W · 12 km/h | W · 12 km/h | S · 12 km/h | SW · 14 km/h | SW · 15 km/h | SW · 16 km/h |
| Humidity (%) | 73% | 68% | 66% | 68% | 73% | 70% | 72% | 74% | 73% | 71% | 69% | 73% |
| Day length | 9.8h | 10.8h | 12.0h | 13.2h | 14.3h | 14.8h | 14.6h | 13.6h | 12.4h | 11.2h | 10.1h | 9.5h |