Grindavík monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Grindavík

Grindavík average temperature chart (Celsius) Grindavík average temperature chart (Fahrenheit)
Average monthly temperatures in Grindavík (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 1.7 2.5 2.8 5.3 8.8 11.2 12.8 12.6 9.5 6.4 3.3 2.1
°F 35.1 36.6 37.1 41.6 47.8 52.2 55 54.6 49.2 43.6 38 35.8

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Grindavík monthly rainfall chart (mm) Grindavík monthly rainfall chart (inches)
Average monthly rainfall in Grindavík (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 104 101 102 82 68 71 67 92 97 124 104 111
inches 4.1 4 4 3.2 2.7 2.8 2.6 3.6 3.8 4.9 4.1 4.4
Rainy days 19 18 20 19 16 17 17 18 18 21 18 20

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Grindavík

Grindavík average daily sunshine chart
Average daily sunshine Grindavík
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 0.7 1.5 3.1 4.5 3 0 3 5.4 4.1 2.6 1.4 0.5

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Grindavík average minimum / maximum temperatures (Celsius) Grindavík average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Grindavík (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -2.9 -2.1 -2 0.4 3.5 6.5 7.9 7.7 5 2.3 -1.1 -2.6
Max °C 1.9 2.7 3 5.5 8.9 11.4 12.9 12.7 9.7 6.6 3.5 2.2
Min °F 26.9 28.3 28.5 32.6 38.3 43.6 46.2 45.9 40.9 36.1 30.1 27.3
Max °F 31.1 32.5 32.9 37.2 43.2 48 50.7 50.4 45.1 39.9 34.2 31.6

Sea temperature

The graph below shows the average sea temperature.

Grindavík average sea temperature chart (Celsius) Grindavík average sea temperature chart (Fahrenheit)
Average sea temperature around Grindavík in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7 6.8 6.6 6.7 7.7 9.5 11.3 11.9 10.9 9.4 8.1 7.4
°F 44.6 44.2 43.9 44 45.8 49.2 52.3 53.4 51.5 48.9 46.6 45.3

Wind speed

The graph below shows the average wind speed.

Grindavík average winspeed by month (km/h) Grindavík average winspeed by month (mph)
Average wind speed in Grindavík (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 25 26 25 23 20 19 18 19 21 22 23 25
mph 16 16 16 14 12 12 11 12 13 14 15 16

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Grindavík relative humidity averages
Average relative humidity in Grindavík
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
82% 82% 81% 81% 78% 80% 82% 82% 81% 82% 82% 82%

Other monthly averages

UV index Best time to go?

Grindavík weather stats

Grindavík weather statistics
Hottest month: July 12.8°C 55°F
Driest month: July 67mm 2.6ins
Sunniest month: May 3hrs
Coldest month: January 1.7°C 35.1°F
Wettest month: October 124mm 4.9ins
Warmest sea: August 11.9°C 53.4°F
Map showing location of Grindavík (63.8424, -22.43375)

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