Climate averages 1991–2020
Heerlen weather
in July.
A warm, moderately wet month: the warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Heerlen: daytime highs average 22.5°C and nights cool to about 14.3°C. By daytime temperature it is the warmest month of the year.
Expect about 70 mm of rain on roughly 13 days, which makes July a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 16 h 02 min on an average July day.
The nearest other city in this atlas is Aachen (14 km away). In July its highs average 22.1°C, about as warm as Heerlen, with 83 mm of rain.
Among the 44 cities listed in the Netherlands, Heerlen ranks joint 5th of 44 for the warmest July highs and 2nd of 44 for the driest July (rainfall, lowest first). The mean July high of those 44 cities is 21.6°C; Heerlen is 0.9°C warmer than that mean.
From July to August, average highs fall by 0.1°C to 22.4°C, and monthly rainfall falls from 70 mm to 67 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Heerlen climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.3°C0.6°C | 0.6°C | 63 | 12.5 | 8.58 h |
| February | 6.4°C0.7°C | 0.7°C | 57 | 11.4 | 10.010 h |
| March | 9.9°C2.5°C | 2.5°C | 56 | 12.4 | 11.812 h |
| April | 13.9°C5.1°C | 5.1°C | 44 | 10.2 | 13.814 h |
| May | 17.6°C9.0°C | 9.0°C | 52 | 11.4 | 15.515 h |
| June | 20.5°C12.1°C | 12.1°C | 63 | 11.6 | 16.416 h |
| July, selected | 22.5°C14.3°C | 14.3°C | 70 | 12.5 | 16.016 h |
| August | 22.4°C14.2°C | 14.2°C | 67 | 11.2 | 14.615 h |
| September | 18.8°C11.4°C | 11.4°C | 57 | 10.1 | 12.713 h |
| October | 14.3°C8.3°C | 8.3°C | 59 | 11.0 | 10.811 h |
| November | 9.2°C4.5°C | 4.5°C | 61 | 12.4 | 9.09 h |
| December | 5.9°C1.7°C | 1.7°C | 72 | 13.7 | 8.08 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Aachen in JulyGermany · 14 kmHigh 22.1°C · Low 14.1°C · 83 mm rain
- Maastricht in JulyThe Netherlands · 21 kmHigh 22.7°C · Low 14.4°C · 80 mm rain
- Düren in JulyGermany · 37 kmHigh 22.5°C · Low 14.2°C · 80 mm rain
- Liège in JulyBelgium · 40 kmHigh 22.7°C · Low 14.5°C · 78 mm rain
- Hasselt in JulyBelgium · 45 kmHigh 22.8°C · Low 14.5°C · 75 mm rain
- Mönchengladbach in JulyGermany · 46 kmHigh 23.0°C · Low 14.7°C · 81 mm rain
- Viersen in JulyGermany · 50 kmHigh 23.0°C · Low 14.8°C · 81 mm rain
- Venlo in JulyThe Netherlands · 56 kmHigh 23.1°C · Low 14.8°C · 78 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Heerlen) is explained once on the Heerlen year overview and on the Sources, method and limits page.