AI-generatedHeerlen at a glance
- Best time
- May – Sep
- Warmest month
- Jul · 25°
- Sunshine a year
- 1,640 h
- Rain a year
- 749 mm
- Climate
- Temperate
- Time zone
- UTC+1 / UTC+2
- Elevation
- 114 m
Climate in Heerlen
Heerlen has a temperate climate with warm summers and cool winters. July is the warmest month with average highs of 25 °C, while December is the coolest at 6 °C. With around 1,640 hours of sunshine a year, Heerlen is moderately sunny; June is the sunniest month with 6.9 hours a day.
Holiday weather through the year
Best time to visit Heerlen
The best time to visit Heerlen is from May to September. For sightseeing, day trips and hiking, conditions are most comfortable from April to June and from August to October. Rain is frequent in March and from November to January; the wettest month is July with 74 mm.
Heerlen through the seasons
How the weather changes over the seasons, with averages for each.
Heerlen in spring
Mar – May
Fair
- 11–19 °C by day
- 5.3 h of sun a day
- 35 rainy days in all
Heerlen in summer
Jun – Aug
Good
- 22–25 °C by day
- 6.7 h of sun a day
- 36 rainy days in all
Heerlen in autumn
Sep – Nov
Fair
- 10–20 °C by day
- 3.7 h of sun a day
- 35 rainy days in all
Heerlen in winter
Dec – Feb
Poor
- 6–8 °C by day
- 2.2 h of sun a day
- 39 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Apr – Jun, Aug – Oct
15–28 °C and not too much rain
Rainy months
Mar, Nov – Jan
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Heerlen for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Fair
Best time to visit: May – September
Good forSightseeing & walks
A typical day in October
- Morning, 08:00: about 9°
- Midday, 13:00: about 15°
- Afternoon, 16:00: about 16°
- Evening, 20:00: about 13°
- Night, 23:00: about 11°
07:5718:46
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:37–08:42 · evening 18:01–19:07
- Blue hour
- Morning 07:24–07:37 · evening 19:07–19:19
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Heerlen compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 18° at the start of the month to 13° at the end. The days get 1.8 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 18° | 13° |
| Night-time low | 10° | 7° |
| Daylight | 11.7 h | 9.9 h |
What is the weather like in Heerlen in October?
In October, Heerlen is cool: daytime highs average 16 °C, and nights cool down to about 9 °C. The sun is scarce, with only about 3.9 hours a day. Rain is frequent, with about 12 rainy days and 65 mm in total. All in all, October is a so-so month for a holiday in Heerlen.
More details for October
- Daylight
- 10 h 49 min07:57 – 18:46
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 71 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2offset from UTC
How the score comes together
- Temperatureweight 50 %76 %
- Sunshineweight 20 %15 %
- Few rainy daysweight 30 %44 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Compare two months in Heerlen
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
June has the better holiday weather in Heerlen: score 78 against 54. In June, days are 6 °C warmer than in October. June has one rainy day fewer. The sun shines 3 hours longer a day in June.
| Month | October | June |
|---|---|---|
| Holiday weather score | 54 | 78better |
| Daytime high | 16° | 22° |
| Night-time low | 9° | 13° |
| Sunshine | 3.9 h | 6.9 hbetter |
| Rainy days | 12 | 11better |
| Rainfall | 65 mm | 64 mm |
Based on the climate averages 1996–2025.
Heerlen month by month
The typical weather for every month at a glance.
11January7° · 2.2 h
In January, Heerlen is cold: daytime highs average 7 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 2.2 hours a day. Rain is frequent, with about 13 rainy days and 65 mm in total. Snow falls on about 2 days. All in all, January is not an ideal month for a holiday in Heerlen.
Heerlen in January13February8° · 2.7 h
In February, Heerlen is cold: daytime highs average 8 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 2.7 hours a day. Rain is frequent, with about 12 rainy days and 61 mm in total. Snow falls on about 2 days. All in all, February is not an ideal month for a holiday in Heerlen.
Heerlen in February33March11° · 4.1 h
In March, Heerlen is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. Expect around 4.1 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 56 mm in total. All in all, March is not an ideal month for a holiday in Heerlen.
Heerlen in March62April16° · 5.6 h
In April, Heerlen is cool: daytime highs average 16 °C, and nights cool down to about 7 °C. Expect around 5.6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 46 mm in total. All in all, April is a good month for a holiday in Heerlen.
Heerlen in April75May19° · 6.3 h
In May, Heerlen is mild: daytime highs average 19 °C, and nights cool down to about 10 °C. Expect around 6.3 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 58 mm in total. All in all, May is a good month for a holiday in Heerlen.
Heerlen in May78June22° · 6.9 h
In June, Heerlen is warm: daytime highs average 22 °C, and nights cool down to about 13 °C. The sun shines for around 6.9 hours a day. Rain is frequent, with about 11 rainy days and 64 mm in total. All in all, June is a good month for a holiday in Heerlen.
Heerlen in June73July25° · 6.7 h
In July, Heerlen is warm: daytime highs average 25 °C, and nights cool down to about 15 °C. The sun shines for around 6.7 hours a day. Rain is frequent, with about 13 rainy days and 74 mm in total. All in all, July is a good month for a holiday in Heerlen.
Heerlen in July74August24° · 6.4 h
In August, Heerlen is warm: daytime highs average 24 °C, and nights cool down to about 15 °C. Expect around 6.4 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 70 mm in total. All in all, August is a good month for a holiday in Heerlen.
Heerlen in August74September20° · 5.0 h
In September, Heerlen is mild: daytime highs average 20 °C, and nights cool down to about 12 °C. Expect around 5.0 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 57 mm in total. All in all, September is a good month for a holiday in Heerlen.
Heerlen in September54October16° · 3.9 h
In October, Heerlen is cool: daytime highs average 16 °C, and nights cool down to about 9 °C. The sun is scarce, with only about 3.9 hours a day. Rain is frequent, with about 12 rainy days and 65 mm in total. All in all, October is a so-so month for a holiday in Heerlen.
Heerlen in October22November10° · 2.3 h
In November, Heerlen is cool: daytime highs average 10 °C, and nights cool down to about 5 °C. The sun is scarce, with only about 2.3 hours a day. Rain is frequent, with about 13 rainy days and 63 mm in total. All in all, November is not an ideal month for a holiday in Heerlen.
Heerlen in November9December6° · 1.7 h
In December, Heerlen is cold: daytime highs average 6 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 1.7 hours a day. Rain is frequent, with about 14 rainy days and 69 mm in total. Snow falls on about 2 days. All in all, December is not an ideal month for a holiday in Heerlen.
Heerlen in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Heerlen
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
CoolOctober: nights around 9°. A duvet at night and a jumper for the evening.
The coolest nights are in January (2°), the warmest in July (15°). Nights are pleasant for sleeping (15 to 20 °C) from July to August. Nights fall below 8 °C on average from November to April, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 11 | 7° | 2° | 2.2 h | 13 | 65 |
| FebruaryFeb | 13 | 8° | 2° | 2.7 h | 12 | 61 |
| MarchMar | 33 | 11° | 4° | 4.1 h | 12 | 56 |
| AprilApr | 62 | 16° | 7° | 5.6 h | 11 | 46 |
| MayMay | 75 | 19° | 10° | 6.3 h | 12 | 58 |
| JuneJun | 78 | 22° | 13° | 6.9 h | 11 | 64 |
| JulyJul | 73 | 25° | 15° | 6.7 h | 13 | 74 |
| AugustAug | 74 | 24° | 15° | 6.4 h | 12 | 70 |
| SeptemberSep | 74 | 20° | 12° | 5.0 h | 10 | 57 |
| OctoberOct | 54 | 16° | 9° | 3.9 h | 12 | 65 |
| NovemberNov | 22 | 10° | 5° | 2.3 h | 13 | 63 |
| DecemberDec | 9 | 6° | 2° | 1.7 h | 14 | 69 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
50.88° N, 5.98° E · 114 m · Europe/Amsterdam
Sunshine hours in Heerlen
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 3.9 of 10.8 hours of daylight in Heerlen, 36 % of the daylight hours.
Sunshine hours: measured at the weather station 14 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Heerlen: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Heerlen has about 12 rainy days with 65 mm of rain in total.
UV index in Heerlen
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 2 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 8).
Minutes until sunburn in October
- Very fair skin
- about 65 min
- Fair skin
- about 80 min
- Light brown skin
- about 115 min
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Heerlen
How breezy and how cloudy Heerlen is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Heerlen typically peaks at 19 km/h during the day: Beaufort 3, gentle breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 71 % of the sky over Heerlen: mostly cloudy, with about 3.9 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Heerlen
How often the day gets hot in Heerlen (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Heerlen has about 0 hot days, with an average daytime high of 16 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Snow in Heerlen
Snow is possible in Heerlen, but no month makes it likely: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Heerlen.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Planning a trip to Heerlen
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Heerlen in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Heerlen has its best school-holiday weather during May half-term (score 76) and its weakest during the Christmas holidays (score 10).
- 53
Easter holidays
Mar – Apr
Fair
- 14 °C by day
- 5.1 h of sun a day
- 11 rainy days a month
Keep in mind: Frequent rain
- 76
May half-term
May – Jun
GoodBest holidays
- 20 °C by day
- 6.4 h of sun a day
- 12 rainy days a month
Good for: Sightseeing & walks
- 74
Summer holidays
Jul – Aug
Good
- 24 °C by day
- 6.5 h of sun a day
- 12 rainy days a month
- 54
October half-term
Oct
Fair
- 16 °C by day
- 3.9 h of sun a day
- 12 rainy days a month
Good for: Sightseeing & walks
- 10
Christmas holidays
Dec – Jan
Poor
- 6 °C by day
- 2.0 h of sun a day
- 13 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- Short trip – train or car is often quicker
- Distance
- 450 km
- Time zone
- UTC+2
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Heerlen compared
Put Heerlen side by side with another destination.
Heerlen vs Kerkrade
In October the holiday weather in Heerlen and Kerkrade is about equally good (score 54 vs 51). During the day Kerkrade is 1 °C cooler than Heerlen.
| in October | Heerlen | Kerkrade |
|---|---|---|
| Holiday weather score | 54 | 51 |
| Daytime high | 16° | 15° |
| Sunshine | 4 h | 4 h |
| Rainy days | 12 | 13 |
| Best time | May – Sep | May – Sep |
Through the year
Netherlands in October: the best places
In October, Heerlen ranks 1 among the 31 nearest destinations in this country.
- HeerlenThis page16°54
- 2Arcen15°54
- 3Sittard15°53
- 4Maastricht15°53
- 5Roermond16°53
- 6Eindhoven15°52
- 7Nuenen15°52
- 8Breda15°52
Near Heerlen
Other destinations close by.
Places with a climate like Heerlen
Destinations whose weather through the year is closest to Heerlen's – good alternatives.
Frequently asked questions about Heerlen
When is the best time to visit Heerlen?
The best time to visit Heerlen is from May to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Heerlen?
July is the warmest month, with average highs of 25 °C and nights around 15 °C. December is the coolest month at 6 °C.
When does it rain most in Heerlen?
Rain is frequent in March and from November to January; the wettest month is July with 74 mm. The driest month is April with 46 mm.
How many hours of sunshine does Heerlen get?
Heerlen gets around 1,640 hours of sunshine a year. The sunniest month is June with 6.9 hours a day; in December there are 1.7 hours a day.
What time zone is Heerlen in?
Heerlen is on UTC+1 in January and UTC+2 in July.
Which school holidays are best for Heerlen?
Heerlen has its best school-holiday weather during May half-term (score 76) and its weakest during the Christmas holidays (score 10). Holiday ratings (0–100): Easter holidays 53, May half-term 76, summer holidays 74, October half-term 54, Christmas holidays 10.