Kostroma weather by month & the best time to visit
Russia · regional city · continental climate

The best time to visit Kostroma is June — its sunniest month (Sunshine Score 74/100), with August and July close behind. Kostroma averages about 1,730 hours of sunshine a year. Daytime highs around 20°C / 68°F and roughly 82 mm of rain in June.
When is the best time to visit Kostroma?
For sunshine, the best time to visit Kostroma is June, then August and July. The dullest month is January (0/100, 52 mm of rain). The full month-by-month picture is in the table below.
How sunny is Kostroma?
Kostroma isn't a sunny place by world standards: about 1,730 hours of sunshine a year. 74 Sunshine Score points separate June (74) from January (0), so the month you pick matters. It ranks #117 of 145 destinations in Russia for annual sunshine, below the national median of 2,004 hours. The year's 794 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 |
|---|---|---|---|---|---|
| January | 0 | -9° / 16°F | -15° / 5°F | 52 mm | 0 |
| February | 0 | -8° / 18°F | -15° / 5°F | 42 mm | 1 |
| March | 0 | -2° / 28°F | -9° / 16°F | 49 mm | 2 |
| April | 0 | 6° / 43°F | -2° / 28°F | 50 mm | 2 |
| May | 56 | 17° / 63°F | 6° / 43°F | 77 mm | 4 |
| June | 74 | 20° / 68°F | 11° / 52°F | 82 mm | 4 |
| July | 73 | 23° / 73°F | 14° / 57°F | 87 mm | 5 |
| August | 74 | 21° / 70°F | 12° / 54°F | 79 mm | 4 |
| September | 44 | 15° / 59°F | 7° / 45°F | 72 mm | 2 |
| October | 0 | 6° / 43°F | 0° / 32°F | 78 mm | 1 |
| November | 0 | -1° / 30°F | -6° / 21°F | 69 mm | 0 |
| December | 0 | -7° / 19°F | -12° / 10°F | 57 mm | 0 |
Nearest destinations
Kostroma: questions and answers
What kind of destination is Kostroma?
Kostroma is a regional city in Russia with a continental climate.
How many hours of sunshine does Kostroma get a year?
Kostroma gets about 1,730 hours of sunshine a year, at its best around June.
When is the best time to visit Kostroma?
The sunniest time to visit Kostroma is June, when the Sunshine Score peaks at 74/100 (with August and July close behind). Expect daytime highs around 20°C / 68°F.
What is the least sunny month in Kostroma?
January is the least sunny month in Kostroma, scoring 0/100 with about 52 mm of rain.
How strong is the sun in Kostroma?
The typical midday UV index in Kostroma peaks around 5 (moderate) in July, 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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