Best time to visit Groningen

Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
I'm comfortable up to 27°C feels-like
22° heat-averse 30° heat-loving

Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.

Saved to this browser. Changes update the strips below.
Recent · 2020-2024
Interest Google Trends 2021-2025 searches, not arrivals (?)
Day · avg daily high (?)
Night · avg overnight low (?)
UV index · On a typical day around midday, UV is about this (?)
1234544311
On the sunniest 1 in 10 days, UV reaches this — and even higher
75
PM2.5 air quality · on a typical day (?)
1012129876787910
On the worst 1 in 10 days, PM2.5 reaches this — and even higher
22212514121091314121619
June 7/10 feels 19°C (+2°C vs 1991-2020) · HCI 75/100
Day 21° · Night 12° 65% humidity 20 km/h wind 12 rain days (140h) 264h sun
Thermal 8
Sky 7
Rain 6
Wind 10

Higher = better, including rain & wind (green = "doesn't hurt the score", not "lots of it").

How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.

Compare with another destination

Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.

Tours in Groningen

6 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on Groningen).

  1. 1Groningen Scavenger Hunt and Sights Self-Guided Tour5.00★ (2)2hfrom $6
  2. 2Private BBQ Cruise Tour at Lake Paterswoldsemeer With Drinks5.00★ (1)2hfrom $609
  3. 3Groningen Private Custom Walking Tour With A Guide (Private Tour)5.00★ (3)from $64
  4. 4Groningen: Canal Cruise - open boat (optional) Audio Guide5.00★ (8)1hfrom $23
  5. 5Historical Canal Tour4.93★ (71)1hfrom $25
  6. 6Perfumery Exploration Workshop in Groningen5.00★ (25)2h 30mfrom $89

Last refreshed 2026-06-18.

Similar climatesUtrecht97% · Amsterdam97% · Rotterdam96%

Other destinations with the most-alike year-round climate to Groningen (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Groningen's. Based on the 2020-2024 climatology, not this year's actual weather.

Month-by-month

Month Temp °C Feels °C Rain days Rain h Rain h/day Humidity Wind km/h Sun h UV Interest Score
Jan 2–7 2 14 174 12.4 84% 26 79 — Quiet 3
Feb 3–8 4 15 184 12.3 79% 28 98 1 Quiet 3
Mar 3–10 6 13 146 11.2 71% 23 167 2 Quiet 5
Apr 4–12 9 11 140 12.7 64% 23 223 3 Quiet 6
May 8–17 14 13 145 11.2 66% 21 263 4 Quiet 6
Jun 12–21 19 12 140 11.7 65% 20 264 5 Quiet 7
Jul 14–21 20 18 218 12.1 69% 21 257 4 Quiet 6
Aug 14–22 22 15 164 10.9 68% 20 261 4 Peak 7
Sep 12–20 19 11 125 11.4 70% 19 204 3 Busy 7
Oct 9–15 13 16 179 11.2 79% 24 135 1 Moderate 5
Nov 5–10 7 15 161 10.7 85% 24 89 1 Peak 4
Dec 3–7 3 15 187 12.5 88% 23 57 — Busy 3

UV Index in Groningen by Month

UV index in Groningen peaks at 5 (moderate) in June, dropping to 0 (low) in January.

Best months in detail

June

7/10

12–21°C (feels 19°C) · 12 rain days (140h) · 264 sun hours · 65% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)

September

7/10

12–20°C (feels 19°C) · 11 rain days (125h) · 204 sun hours · 70% humidity · Busy crowd · UV 3 (moderate) · sunniest 1 in 10 days reach 5 (moderate)

August

7/10

14–22°C · 15 rain days (164h) · 261 sun hours · 68% humidity · Peak crowd · UV 4 (moderate)

Every month

Show the other 9 months in detail

January

3/10

2–7°C (feels 2°C) · 14 rain days (174h) · 79 sun hours · 84% humidity · Quiet crowd

February

3/10

3–8°C (feels 4°C) · 15 rain days (184h) · 98 sun hours · 79% humidity · Quiet crowd · UV 1 (low)

March

5/10

3–10°C (feels 6°C) · 13 rain days (146h) · 167 sun hours · 71% humidity · Quiet crowd · UV 2 (low)

April

6/10

4–12°C (feels 9°C) · 11 rain days (140h) · 223 sun hours · 64% humidity · Quiet crowd · UV 3 (moderate)

May

6/10

8–17°C (feels 14°C) · 13 rain days (145h) · 263 sun hours · 66% humidity · Quiet crowd · UV 4 (moderate)

July

6/10

14–21°C · 18 rain days (218h) · 257 sun hours · 69% humidity · Quiet crowd · UV 4 (moderate)

October

5/10

9–15°C (feels 13°C) · 16 rain days (179h) · 135 sun hours · 79% humidity · Moderate crowd · UV 1 (low)

November

4/10

5–10°C (feels 7°C) · 15 rain days (161h) · 89 sun hours · 85% humidity · Peak crowd · UV 1 (low)

December

3/10

3–7°C (feels 3°C) · 15 rain days (187h) · 57 sun hours · 88% humidity · Busy crowd

Frequently asked questions about visiting Groningen

When is the best time to visit Groningen?

June is the highest-scoring month (7/10 on the Holiday Climate Index). Typical conditions: 12–21°C (12 rainy days). The top three months by score are June, September, August.

What is the worst time to visit Groningen?

December is the lowest-scoring month (3/10). Typical conditions: 3–7°C (15 rainy days).

When are crowds lowest in Groningen?

Search-interest seasonality (Google Trends 2021-2025) is lowest in March and peaks in November. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.

Which months in Groningen have good weather but fewer tourists?

June (climate 7/10, crowd index 16) and April (climate 6/10, crowd index 7) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.

What is the UV index in Groningen by month?

UV peaks at 5 (moderate) in June and is lowest in January at 0 (low). Monthly peak values: Jan —, Feb 1, Mar 2, Apr 3, May 4, Jun 5, Jul 4, Aug 4, Sep 3, Oct 1, Nov 1, Dec —.

What is the UV index in Groningen in June?

June is the peak UV month in Groningen, with a daily-peak UV index of 5 (moderate). Standard sun protection — sunglasses and light SPF — is recommended.

How high can UV get in Groningen on the sunniest days?

Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. June is the worst case: typical days average UV 5 (moderate), but the top 10% of days reach UV 7 (high) — and even higher. Months where the sunniest days routinely exceed the typical reading: June, September. Plan sun protection for the worst case, not the average.

Is air quality in Groningen bad for travelers?

PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 5 months: January, February, March, November, December. The worst month is March with a typical-day mean of 12 µg/m³ (moderate); on the worst 10% of days PM2.5 reaches 25 µg/m³ (unhealthy) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.