March weather forecastGrindavik, Iceland
March
Weather in March
As March arrives, spring starts to nudge the winter chill in Grindavik. With this change, snowfall levels reach as high as 75mm (2.95"), marking the third month of winter. Visitors possibly can anticipate enjoying sights of lush icy landscapes, punctuated by the first signs of daffodils emerging from the frozen ground. Long walks along Grindavik's coastal trails can be delightful and calming, well wrapped up to weather the cold. Bear in mind that road conditions can be treacherous, caused by thawing snow coupled with the city's potentially high March rainfall.Temperature
The coldest period in Grindavik, with an average high-temperature of 4.2°C (39.6°F), falls in February, March and December.Humidity
In March, the average relative humidity is 75%.Rainfall
In Grindavik, in March, it is raining for 16 days, with typically 82mm (3.23") of accumulated precipitation. Throughout the year, in Grindavik, there are 193.9 rainfall days, and 833mm (32.8") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. March is the month with the most snowfall in Grindavik. Snow falls for 8 days and accumulates 75mm (2.95") of snow.Sea temperature
March is the month with the coldest seawater, with an average sea temperature of 5.8°C (42.4°F).Note: With the appropriate swimsuit, one can swim in 5.8°C (42.4°F) even if temperatures dip below 10°C (50°F); otherwise, be ready for cold shock and breath issues. A fleeting swim around 13°C (55.4°F) is distressing.
Daylight
In Grindavik, the average length of the day in March is 11h and 49min.On the first day of March in Grindavik, sunrise is at 08:34 and sunset at 18:49. On the last day of the month, sunrise is at 06:49 and sunset at 20:18 GMT.
Sunshine
In Grindavik, the average sunshine in March is 4.1h.UV index
January through May, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Grindavik. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 2 during March translates into these guidelines:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Grindavik, Iceland
- Average high temperature in March: 4.2°C
The warmest months (with the highest average high temperature) are July and August (12.2°C).
The months with the lowest average high temperature are February, March and December (4.2°C).
- Average low temperature in March: 1.3°C
The month with the highest average low temperature is July (9.9°C).
The coldest months (with the lowest average low temperature) are March and December (1.3°C).
Average pressure in March
Grindavik, Iceland
- Average pressure in March: 1003.2mbar
The month with the highest atmospheric pressure is June (1013.7mbar).
The month with the lowest atmospheric pressure is January (996.1mbar).
Average wind speed in March
Grindavik, Iceland
- Average wind speed in March: 32.7km/h
The windiest month (with the highest average wind speed) is February (35km/h).
The calmest month (with the lowest average wind speed) is June (20.1km/h).
Average humidity in March
Grindavik, Iceland
- Average humidity in March: 75%
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is December (74%).
Average rainfall in March
Grindavik, Iceland
- Average rainfall in March: 82mm
The wettest month (with the highest rainfall) is January (99mm).
The driest month (with the least rainfall) is June (35mm).
Average rainfall days in March
Grindavik, Iceland
- Average rainfall days in March: 16 days
The month with the highest number of rainy days is September (19.9 days).
The month with the least rainy days is June (12.5 days).
Average snowfall in March
Grindavik, Iceland
- Average snowfall in March: 75mm
The month with the highest snowfall is March (75mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in March
Grindavik, Iceland
- Average snowfall days in March: 8 days
The month with the highest number of snowfall days is March (8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in March
Grindavik, Iceland
- Average sea temperature in March: 5.8°C
The best month for swimming (with the highest average sea temperature) is July (11.7°C).
The coldest month (with the lowest average sea temperature) is March (5.8°C).
Average daylight in March /
Average sunshine in March
Grindavik, Iceland
- Average daylight in March: 11h and 48min
The month with the longest days is June (Average daylight: 20h and 36min).
The month with the shortest days is December (Average daylight: 4h and 30min).
- Average sunshine in March: 4h and 6min
The month with the most sunshine is August (Average sunshine: 7h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in March
Grindavik, Iceland
- Average sunshine days in March: 7.1 days
The month with the most sunshine days is June (15 days).
The months with the least sunshine days are March and April (7.1 days).
Average UV index in March
Grindavik, Iceland
- Average UV index in March: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, March, April, May, October, November and December (UV index 2).
Average cloud cover in March
Grindavik, Iceland
- Average cloud cover in March: 69
The month with the most cloud cover is March (Cloud cover 69).
The months with the least cloud cover are May, July and August (Cloud cover 60).
Average visibility in March
Grindavik, Iceland
- Average visibility in March: 9km
The months with the highest visibility are June and August (10km).
The months with the lowest visibility are January, February, March, April, May, July, September, October, November and December (9km).





