Climate in Groningen, Netherlands

Groningen, Netherlands has a oceanic climate. The annual average temperature is about 9°C, with around 1115 hours of sunshine; the national rainfall baseline is roughly 821 mm across 137 rainy days a year. The warmest month is Jul (highs near 18.7°C) and the coldest is Jan (lows near -0.6°C). These are deterministic planning estimates, not a forecast or measured station data. Temperature and sunshine follow the city's latitude; rainfall and the climate zone come from a country-level baseline that every city in the country shares (refined by region in the United States, Canada and Australia), so they do not show local differences. Check current conditions with an official meteorological service before travel.

Data year 2025; last updated 2026-05-16.

Groningen is classified as Oceanic. The classification combines the city’s own temperature range, which follows its latitude, with a rainfall pattern taken at country level for Netherlands — so cities in the same country usually share a zone.

The rainfall baseline for Netherlands is about 821 mm a year over roughly 137 rainy days, with the wettest month Dec and the driest Apr. This figure is not specific to Groningen: every city in Netherlands carries the same baseline, so it will not show the difference between, say, a dry inland city and a wet coastal one. Use an official meteorological service for local rainfall.

Groningen sees an estimated 1115 hours of sunshine a year, concentrated in the warmer months around Jul.

By temperature and rainfall, the most comfortable months in Groningen are Jul, Jun, Aug. Conditions vary year to year — verify with a current forecast before booking.

Groningen has a climate comfort score of 59/100, a moderate year-round climate by this measure. The score weights mild temperatures most, then rainfall balance, sunshine, low seasonality, and the absence of extreme winter cold or summer heat.

• Climate in Utrecht — Oceanic, comfort 65/100
• Climate in Eindhoven — Oceanic, comfort 65/100
• Climate in Amsterdam — Oceanic, comfort 65/100