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Climate · Grindavík

Grindavík in May

Chilly and wet, as the days lengthen.

Typical weather, averaged over 30 years

May in Grindavík is chilly: highs near 50°F, lows near 39°F. Rain falls on about four days a week, and the days lengthen by 2 hours 54 minutes from the first week to the last.May in Grindavík is chilly: highs near 10°C, lows near 4°C. Rain falls on about four days a week, and the days lengthen by 2 hours 54 minutes from the first week to the last.

High
50°F10°Caverage
Low
39°F4°Caverage
Wet days
4a week · 51% of days
Daylight
18h 18mon average

Is May a good time to visit Grindavík?

A good month, just outside Grindavík's mildest months, which run from June to August.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How May sits in the year

week by week

Temperature

Highs near 50°F in May, against 40°F to 58°F through the year.Highs near 10°C in May, against 4°C to 14°C through the year.

Chance of a wet day

51% of days in May, against 47% to 67% through the year.

Cloud cover

62% cover in May, against 62% to 76% through the year.

Daylight

18h 18m in May, against 4h 29m to 20h 37m through the year.

Week by week, lightly smoothed, with May shaded. The olive line marks the mildest months. Hover or tap a week for its figures.

Either side

  1. April45°7°low 35°low 2°4 wet days a weekRain on about four days a week.
  2. May50°10°low 39°low 4°4 wet days a weekRain on about four days a week.
  3. June55°13°low 45°low 7°4 wet days a weekRain on about four days a week.

Where Grindavík sits, in May

Atlantic/Reykjavik
this place
typical high in May 40°F4°C95°F35°C
Sunrise, mid-May
4:21 AMsets 10:31 PM
Above the sea
30 mlow-lying
Latitude
63.8°Nnorthern hemisphere
Nearest of ours
Reykjavik41 km north-east

The land around Grindavík, shaded by its typical high in May, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Iceland in May

high · low · wet days
See May on the planning mapThe whole year in Grindavík

Typical weather, averaged over 30 years (1995–2024), read 7 km north-west of Grindavík. Its own grid square is mostly sea and holds only a daily average, so the page reads the nearest square with a true high and low near the town's height. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.