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.
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- Sun hours / year
- 1,730
- Sunniest month
- June
- Peak score
- 74/100
- Rain / year
- 794 mm
- Snow / year
- ≈3 m
- Midday UV at peak
- 5 (moderate)
- Population
- 278k
- Elevation
- 135 m

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 |
See Kostroma on the interactive sunshine globe →
Nearby places for sunshine
- Cherepovets Russia · 239 km · best in Aug · 1,618 h sun/yr
- Nizhny Novgorod Russia · 242 km · best in Aug · 1,753 h sun/yr
- Moscow Russia · 298 km · best in Aug · 1,676 h sun/yr
- Cheboksary Russia · 428 km · best in Aug · 1,757 h sun/yr
- Kirov Russia · 495 km · best in Jul · 1,676 h sun/yr
- Kazan Russia · 559 km · best in Aug · 1,964 h sun/yr
Nearest destinations
- Yaroslavl Russia · 58 km · 1,727 h sun/yr · best in Aug
- Ivanovo Russia · 95 km · 1,774 h sun/yr · best in Aug
- Rybinsk Russia · 128 km · 1,625 h sun/yr · best in Aug
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