Climate in Groningen

Groningen, Netherlands has a oceanic climate. The annual average temperature is about 9°C and the city receives roughly 821 mm of precipitation across 137 rainy days a year, with around 1115 hours of sunshine. The warmest month is Jul (highs near 18.7°C) and the coldest is Jan (lows near -0.6°C). These are deterministic, latitude- and region-based planning estimates — not a forecast or measured station data; check current conditions with an official meteorological service before travel.

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

Groningen is classified as Oceanic. This reflects its annual temperature range and the seasonal pattern of its rainfall.

Groningen receives about 821 mm of precipitation a year over roughly 137 rainy days. The wettest month is Dec and the driest is Apr.

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