Gustavus weather by month & the best time to visit
United States · seaside town · oceanic / maritime climate
Gustavus is short on reliable sunshine. Its best month is July (Score 43/100) — for stronger sun, try one of the nearby alternatives.
When is the best time to visit Gustavus?
Gustavus never gets truly sunny weather: July is as good as it gets at 43/100, and January is the low point (0/100). If sunshine is the point of the trip, the nearby alternatives do better.
How sunny is Gustavus?
Gustavus isn't a sunny place by world standards: about 1,229 hours of sunshine a year. July (43/100) is noticeably better than January (0). It ranks #562 of 580 destinations in United States for annual sunshine, below the national median of 2,279 hours. The year's 2,979 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 | -3° / 27°F | 317 mm | 0 | 4° / 39°F |
| February | 0 | 1° / 34°F | -3° / 27°F | 210 mm | 0 | 4° / 39°F |
| March | 0 | 2° / 36°F | -2° / 28°F | 190 mm | 1 | 5° / 41°F |
| April | 0 | 6° / 43°F | 2° / 36°F | 164 mm | 2 | 6° / 43°F |
| May | 14 | 11° / 52°F | 6° / 43°F | 156 mm | 3 | 9° / 48°F |
| June | 34 | 15° / 59°F | 10° / 50°F | 146 mm | 4 | 11° / 52°F |
| July | 43 | 17° / 63°F | 12° / 54°F | 188 mm | 3 | 13° / 55°F |
| August | 43 | 17° / 63°F | 12° / 54°F | 265 mm | 3 | 15° / 59°F |
| September | 24 | 13° / 55°F | 9° / 48°F | 334 mm | 2 | 12° / 54°F |
| October | 0 | 8° / 46°F | 5° / 41°F | 363 mm | 1 | 9° / 48°F |
| November | 0 | 3° / 37°F | 0° / 32°F | 310 mm | 0 | 6° / 43°F |
| December | 0 | 1° / 34°F | -2° / 28°F | 336 mm | 0 | 5° / 41°F |
Sea temperature in Gustavus by month
The sea off Gustavus is warmest in August at around 15°C / 59°F, and coolest in January at 4°C / 39°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
Gustavus: questions and answers
What kind of destination is Gustavus?
Gustavus is a seaside town in United States with a oceanic / maritime climate — the sea reaches 15°C at its warmest.
How many hours of sunshine does Gustavus get a year?
Gustavus gets about 1,229 hours of sunshine a year, at its best around July.
When is the best time to visit Gustavus?
Gustavus is short on reliable sunshine — its best month is only July at 43/100. For a sunnier trip, see the nearest strong-sun alternatives listed on the page.
What is the least sunny month in Gustavus?
January is the least sunny month in Gustavus, scoring 0/100 with about 317 mm of rain.
What is the sea temperature in Gustavus?
The sea in Gustavus ranges from about 4°C (January) to 15°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Gustavus?
The typical midday UV index in Gustavus peaks around 4 (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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