Grímsey/Sandvík weather by month & the best time to visit
Iceland · seaside town · subpolar / tundra climate
Grímsey/Sandvík is short on reliable sunshine. Its best month is August (Score 12/100) — for stronger sun, try one of the nearby alternatives.
When is the best time to visit Grímsey/Sandvík?
Grímsey/Sandvík never gets truly sunny weather: August is as good as it gets at 12/100, and January is the low point (0/100). If sunshine is the point of the trip, the nearby alternatives do better.
How sunny is Grímsey/Sandvík?
Grímsey/Sandvík isn't a sunny place by world standards: about 1,074 hours of sunshine a year. Conditions barely change through the year — only 12 Sunshine Score points separate August from January. It ranks #7 of 9 destinations in Iceland for annual sunshine, below the national median of 1,318 hours. The year's 1,091 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | 2° / 36°F | 0° / 32°F | 108 mm | 0 | 4° / 39°F |
| February | 0 | 2° / 36°F | 0° / 32°F | 91 mm | 0 | 3° / 37°F |
| March | 0 | 2° / 36°F | -1° / 30°F | 97 mm | 0 | 3° / 37°F |
| April | 0 | 3° / 37°F | 1° / 34°F | 77 mm | 1 | 2° / 36°F |
| May | 0 | 5° / 41°F | 3° / 37°F | 63 mm | 2 | 4° / 39°F |
| June | 0 | 8° / 46°F | 6° / 43°F | 43 mm | 3 | 6° / 43°F |
| July | 6 | 9° / 48°F | 8° / 46°F | 63 mm | 3 | 8° / 46°F |
| August | 12 | 10° / 50°F | 8° / 46°F | 75 mm | 2 | 8° / 46°F |
| September | 0 | 8° / 46°F | 6° / 43°F | 106 mm | 1 | 7° / 45°F |
| October | 0 | 5° / 41°F | 4° / 39°F | 124 mm | 0 | 5° / 41°F |
| November | 0 | 4° / 39°F | 2° / 36°F | 118 mm | 0 | 3° / 37°F |
| December | 0 | 3° / 37°F | 0° / 32°F | 126 mm | 0 | 3° / 37°F |
Sea temperature in Grímsey/Sandvík by month
The sea off Grímsey/Sandvík is warmest in July at around 8°C / 46°F, and coolest in April at 2°C / 36°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Grímsey/Sandvík: questions and answers
What kind of destination is Grímsey/Sandvík?
Grímsey/Sandvík is a seaside town in Iceland with a subpolar / tundra climate — the sea reaches 8°C at its warmest.
How many hours of sunshine does Grímsey/Sandvík get a year?
Grímsey/Sandvík gets about 1,074 hours of sunshine a year, at its best around August.
When is the best time to visit Grímsey/Sandvík?
Grímsey/Sandvík is short on reliable sunshine — its best month is only August at 12/100. For a sunnier trip, see the nearest strong-sun alternatives listed on the page.
What is the least sunny month in Grímsey/Sandvík?
January is the least sunny month in Grímsey/Sandvík, scoring 0/100 with about 108 mm of rain.
What is the sea temperature in Grímsey/Sandvík?
The sea in Grímsey/Sandvík ranges from about 2°C (April) to 8°C (July). Month-by-month sea temperatures are on this page.
How strong is the sun in Grímsey/Sandvík?
The typical midday UV index in Grímsey/Sandvík peaks around 3 (moderate) in June, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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