Alstahaug weather by month & the best time to visit
Norway · seaside town · oceanic / maritime climate

The best time to visit Alstahaug is July — its sunniest month (Sunshine Score 49/100), with August close behind. Alstahaug averages about 1,333 hours of sunshine a year. Daytime highs around 17°C / 63°F and roughly 113 mm of rain in July.
When is the best time to visit Alstahaug?
For sunshine, the best time to visit Alstahaug is July, then August. The dullest month is January (0/100, 168 mm of rain). The full month-by-month picture is in the table below.
How sunny is Alstahaug?
Alstahaug isn't a sunny place by world standards: about 1,333 hours of sunshine a year. 49 Sunshine Score points separate July (49) from January (0), so the month you pick matters. It ranks #27 of 36 destinations in Norway for annual sunshine, below the national median of 1,417 hours. The year's 1,700 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 | 1° / 34°F | -2° / 28°F | 168 mm | 0 | 1° / 34°F |
| February | 0 | 1° / 34°F | -2° / 28°F | 142 mm | 0 | 2° / 36°F |
| March | 0 | 2° / 36°F | -1° / 30°F | 150 mm | 1 | 4° / 39°F |
| April | 0 | 6° / 43°F | 2° / 36°F | 118 mm | 2 | 5° / 41°F |
| May | 12 | 10° / 50°F | 5° / 41°F | 93 mm | 3 | 10° / 50°F |
| June | 28 | 13° / 55°F | 9° / 48°F | 106 mm | 3 | 14° / 57°F |
| July | 49 | 17° / 63°F | 12° / 54°F | 113 mm | 3 | 17° / 63°F |
| August | 43 | 16° / 61°F | 12° / 54°F | 119 mm | 2 | 17° / 63°F |
| September | 20 | 12° / 54°F | 9° / 48°F | 180 mm | 1 | 14° / 57°F |
| October | 0 | 8° / 46°F | 5° / 41°F | 158 mm | 0 | 10° / 50°F |
| November | 0 | 4° / 39°F | 1° / 34°F | 164 mm | 0 | 7° / 45°F |
| December | 0 | 2° / 36°F | -1° / 30°F | 189 mm | 0 | 4° / 39°F |
Sea temperature in Alstahaug by month
The sea off Alstahaug is warmest in July at around 17°C / 63°F, and coolest in January at 1°C / 34°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
Alstahaug: questions and answers
What kind of destination is Alstahaug?
Alstahaug is a seaside town in Norway with a oceanic / maritime climate — the sea reaches 17°C at its warmest.
How many hours of sunshine does Alstahaug get a year?
Alstahaug gets about 1,333 hours of sunshine a year, at its best around July.
When is the best time to visit Alstahaug?
The sunniest time to visit Alstahaug is July, when the Sunshine Score peaks at 49/100 (with August close behind). Expect daytime highs around 17°C / 63°F.
What is the least sunny month in Alstahaug?
January is the least sunny month in Alstahaug, scoring 0/100 with about 168 mm of rain.
What is the sea temperature in Alstahaug?
The sea in Alstahaug ranges from about 1°C (January) to 17°C (July). Month-by-month sea temperatures are on this page.
How strong is the sun in Alstahaug?
The typical midday UV index in Alstahaug peaks around 3 (moderate) in May, 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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