Herstal Climate by Month
Herstal, Wallonia, Belgium
Warm summers and cool winters, with rain spread through the year.
The climate in Herstal is one of warm summers and cool winters, with rain spread through the year. Expect highs of 77°F (25°C) in July and 43°F (6°C) in January, with the coldest nights (February) near 34°F (1°C). About 33 in (837 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 77°F(25°C)
- Average high, July
- Coldest nights
- 34°F(1°C)
- Average low, February
- Rain per year
- 33 in(837 mm)
- No clear rainy season
- Humidity
- 75%
- Sunniest: June
Best and worst months in Herstal
Best for weatherJune to August are the best time for weather in Herstal: highs near 75°F (24°C) and about 3.4 in (86 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 43°F (6°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 June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Herstal weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 43°F(6°C) | 34°F(1°C) | 2.5 in(64 mm) | 88% | 0.7 |
| FebFebruary | 45°F(7°C) | 34°F(1°C) | 2.4 in(62 mm) | 85% | 1.3 |
| MarMarch | 53°F(12°C) | 38°F(3°C) | 2.3 in(58 mm) | 68% | 2.5 |
| AprApril | 60°F(16°C) | 42°F(6°C) | 1.9 in(48 mm) | 63% | 4.1 |
| MayMay | 67°F(20°C) | 48°F(9°C) | 2.4 in(62 mm) | 67% | 5.0 |
| JunJuneBest | 73°F(23°C) | 53°F(12°C) | 3.0 in(76 mm) | 66% | 5.3 |
| JulJulyBest | 77°F(25°C) | 57°F(14°C) | 3.5 in(88 mm) | 66% | 5.0 |
| AugAugustBest | 76°F(25°C) | 57°F(14°C) | 3.7 in(93 mm) | 67% | 4.4 |
| SepSeptember | 69°F(20°C) | 52°F(11°C) | 2.7 in(69 mm) | 73% | 3.2 |
| OctOctober | 60°F(15°C) | 46°F(8°C) | 2.6 in(67 mm) | 81% | 1.8 |
| NovNovember | 50°F(10°C) | 40°F(5°C) | 2.7 in(69 mm) | 88% | 0.9 |
| DecDecember | 44°F(7°C) | 36°F(2°C) | 3.2 in(81 mm) | 84% | 0.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate outside Belgium
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