Welwyn Garden City Climate by Month
Welwyn Garden City, England, United Kingdom
Mild summers and cool winters, with rain spread through the year.
The climate in Welwyn Garden City is one of mild summers and cool winters, with rain spread through the year. Afternoon highs range from 45°F (7°C) in January to 73°F (23°C) in July, and February nights average 35°F (2°C). About 27 in (675 mm) of rain falls in a typical year, with no clear rainy season. The air is humid, averaging 79% relative humidity.
- Warmest month
- 73°F(23°C)
- Average high, July
- Coldest nights
- 35°F(2°C)
- Average low, February
- Rain per year
- 27 in(675 mm)
- No clear rainy season
- Humidity
- 79%
- Sunniest: June
Best and worst months in Welwyn Garden City
Best for weatherThe most comfortable weather comes in July and August, with highs around 72°F (22°C) and about 2.3 in (58 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 46°F (8°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in July.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Welwyn Garden City weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 45°F(7°C) | 35°F(2°C) | 2.4 in(61 mm) | 83% | 0.7 |
| FebFebruary | 46°F(8°C) | 35°F(2°C) | 1.9 in(47 mm) | 81% | 1.3 |
| MarMarch | 51°F(11°C) | 38°F(3°C) | 1.7 in(42 mm) | 80% | 2.5 |
| AprApril | 57°F(14°C) | 40°F(5°C) | 1.8 in(45 mm) | 77% | 3.7 |
| MayMay | 63°F(17°C) | 45°F(7°C) | 1.9 in(47 mm) | 70% | 4.6 |
| JunJune | 68°F(20°C) | 51°F(10°C) | 2.2 in(55 mm) | 75% | 5.0 |
| JulJulyBest | 73°F(23°C) | 54°F(12°C) | 2.2 in(55 mm) | 70% | 4.8 |
| AugAugustBest | 72°F(22°C) | 54°F(12°C) | 2.4 in(60 mm) | 71% | 4.0 |
| SepSeptember | 66°F(19°C) | 50°F(10°C) | 2.2 in(56 mm) | 78% | 3.0 |
| OctOctober | 58°F(15°C) | 46°F(8°C) | 2.9 in(74 mm) | 83% | 1.7 |
| NovNovember | 51°F(11°C) | 40°F(4°C) | 2.7 in(69 mm) | 87% | 0.9 |
| DecDecember | 46°F(8°C) | 36°F(2°C) | 2.5 in(64 mm) | 91% | 0.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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