- WinterDec–Feb1°6°
- December2°6°
- January1°6°
- February1°7°
- SpringMar–May4°15°
- March2°10°
- April4°16°
- May8°19°
- SummerJun–Aug12°23°
- June11°22°
- July13°24°
- August12°23°
- AutumnSep–Nov7°14°
- September9°19°
- October7°15°
- November4°9°
Zwolle, Overijssel Weather by Month and Climate Averages
Zwolle, Overijssel gets 775 mm of precipitation a year over about 178 rainy days. July is the warmest month (average high 24°C) and January the coldest (average low 1°C).
Zwolle climate at a glance
Oceanic climate
Zwolle, Overijssel has warm summers and chilly winters. Daytime highs range from about 5°C in January to 24°C in July. August is usually the wettest month. The most comfortable time to visit is typically May to July and September, when daytime highs sit near 21°C.
How much rain does Zwolle get?
Zwolle gets 775 mm of precipitation in an average year, spread over about 178 days with measurable rain. That is more rainy days than 78% of Germany.
August is the wettest month, with 98 mm. April is the driest, with 30 mm. December has the most rainy days, about 19.
The longest dry spell in the last five years lasted 28 days, to June 19, 2023.
Zwolle weather by month
Zwolle weather in January
In January, Zwolle averages a high of 6°C and a low of 1°C. It gets 76 mm of precipitation over about 18 rainy days. The sun is out about 22% of daylight hours. The January record high is 16°C (2023) and the record low is -17°C (2009).
Zwolle weather in February
In February, Zwolle averages a high of 7°C and a low of 1°C. It gets 57 mm of precipitation over about 15 rainy days. The sun is out about 25% of daylight hours. The February record high is 19°C (2019) and the record low is -16°C (2021).
Zwolle weather in March
In March, Zwolle averages a high of 10°C and a low of 2°C. It gets 58 mm of precipitation over about 14 rainy days. The sun is out about 36% of daylight hours. The March record high is 24°C (2021) and the record low is -9°C (2018).
Zwolle weather in April
In April, Zwolle averages a high of 16°C and a low of 4°C. It gets 30 mm of precipitation over about 11 rainy days. The sun is out about 38% of daylight hours. The April record high is 28°C (2018) and the record low is -6°C (2022).
Zwolle weather in May
In May, Zwolle averages a high of 19°C and a low of 8°C. It gets 50 mm of precipitation over about 13 rainy days. The sun is out about 37% of daylight hours. The May record high is 32°C (2017) and the record low is -1°C (2011). May is one of the most comfortable months to visit.
Zwolle weather in June
In June, Zwolle averages a high of 22°C and a low of 11°C. It gets 64 mm of precipitation over about 12 rainy days. The sun is out about 40% of daylight hours. The June record high is 37°C (2026) and the record low is 3°C (2009). June is one of the most comfortable months to visit.
Zwolle weather in July
In July, Zwolle averages a high of 24°C and a low of 13°C. It gets 76 mm of precipitation over about 15 rainy days. The sun is out about 34% of daylight hours. The July record high is 39°C (2019) and the record low is 5°C (2019). July is one of the most comfortable months to visit.
Zwolle weather in August
In August, Zwolle averages a high of 23°C and a low of 12°C. It gets 98 mm of precipitation over about 17 rainy days. The sun is out about 40% of daylight hours. The August record high is 37°C (2018) and the record low is 4°C (2025).
Zwolle weather in September
In September, Zwolle averages a high of 19°C and a low of 9°C. It gets 59 mm of precipitation over about 13 rainy days. The sun is out about 38% of daylight hours. The September record high is 32°C (2020) and the record low is 1°C (2012). September is one of the most comfortable months to visit.
Zwolle weather in October
In October, Zwolle averages a high of 15°C and a low of 7°C. It gets 65 mm of precipitation over about 15 rainy days. The sun is out about 26% of daylight hours. The October record high is 28°C (2018) and the record low is -4°C (2012).
Zwolle weather in November
In November, Zwolle averages a high of 9°C and a low of 4°C. It gets 66 mm of precipitation over about 17 rainy days. The sun is out about 24% of daylight hours. The November record high is 20°C (2014) and the record low is -7°C (2022).
Zwolle weather in December
In December, Zwolle averages a high of 6°C and a low of 2°C. It gets 78 mm of precipitation over about 19 rainy days. The sun is out about 16% of daylight hours. The December record high is 17°C (2022) and the record low is -14°C (2009).
Sunshine, humidity and wind in Zwolle
June is the sunniest month in Zwolle, with sunshine about 40% of daylight hours. December is the cloudiest, at 16%. Over the year the sun shines about 31% of daylight hours. Zwolle is cloudier than 60% of Germany.
Humidity peaks in December at 90% and is lowest in April at 70%.
Zwolle has about 3 days a year above 32°C. Zwolle is cooler than 63% of Germany.
First and last freeze in Zwolle
The first fall freeze in Zwolle typically comes around November 3, and the last spring freeze around April 24. That leaves a frost-free growing season of about 193 days.
Zwolle weather records
The hottest temperature on record at the Zwolle station is 39°C, on July 25, 2019. The coldest is -17°C, on January 6, 2009.
The wettest day on record brought 151 mm of rain, on August 26, 2010.
The best time to visit Zwolle
The most comfortable time to visit is typically May to July and September, when daytime highs sit near 21°C.
Winter (December–February) is chilly, with average highs around 6°C and lows near 1°C.
Spring (March–May) is mild, with average highs around 15°C and lows near 5°C.
Summer (June–August) is warm, with average highs around 23°C and lows near 12°C. It can feel humid.
Autumn (September–November) is mild, with average highs around 15°C and lows near 7°C.
Monthly climate
| Month | Precip | Rain days | Humidity | Sunshine | Sea temp | Record high | Record low |
|---|---|---|---|---|---|---|---|
| January | 76 mm | 18 | 87% | 22% | -16° | 16° | -17° |
| February | 57 mm | 15 | 83% | 25% | -15° | 19° | -16° |
| March | 58 mm | 14 | 75% | 36% | -14° | 24° | -9° |
| April | 30 mm | 11 | 70% | 38% | -12° | 28° | -6° |
| May | 50 mm | 13 | 72% | 37% | -10° | 32° | -1° |
| June | 64 mm | 12 | 70% | 40% | -8° | 37° | 3° |
| July | 76 mm | 15 | 75% | 34% | -7° | 39° | 5° |
| August | 98 mm | 17 | 75% | 40% | -7° | 37° | 4° |
| September | 59 mm | 13 | 80% | 38% | -8° | 32° | 1° |
| October | 65 mm | 15 | 86% | 26% | -11° | 28° | -4° |
| November | 66 mm | 17 | 88% | 24% | -13° | 20° | -7° |
| December | 78 mm | 19 | 90% | 16% | -15° | 17° | -14° |
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Zwolle climate questions
How much rain does Zwolle get?
Zwolle gets 775 mm of precipitation in an average year, over about 178 rainy days.
What is the wettest month in Zwolle?
August is the wettest month in Zwolle, with 98 mm. April is the driest, with 30 mm.
How many rainy days does Zwolle have a year?
Zwolle has about 178 days with measurable rain in an average year. December has the most, about 19.
What is the hottest month in Zwolle?
July is the warmest month in Zwolle, with an average high of 24°C.
What is the coldest month in Zwolle?
January is the coldest month in Zwolle, with an average low of 1°C.
What is the record high temperature in Zwolle?
The record high at the Zwolle station is 39°C, set on July 25, 2019. The record low is -17°C, on January 6, 2009.
What is the sunniest month in Zwolle?
June is the sunniest month in Zwolle, with sunshine about 40% of daylight hours. December is the cloudiest.
When is the first frost in Zwolle?
The first fall freeze in Zwolle typically comes around November 3. The last spring freeze is around April 24.
What is the best time to visit Zwolle?
The most comfortable time to visit is typically May to July and September, when daytime highs sit near 21°C.
Source: NOAA GHCN-Daily station AHAUS (75 km away).
GraySky on your iPhone
See the forecast and climate for Zwolle, Overijssel.
Climate for places near Zwolle, Overijssel
Normals from NOAA GHCN-Daily station AHAUS.