Ulaanbaatar (Sergelen) weather by month & the best time to visit
Mongolia · city break · semi-arid climate
The best time to visit Ulaanbaatar (Sergelen) is June — its sunniest month (Sunshine Score 90/100), with August and July close behind. Ulaanbaatar (Sergelen) averages about 3,261 hours of sunshine a year. Daytime highs around 24°C / 75°F and roughly 44 mm of rain in June.
When is the best time to visit Ulaanbaatar (Sergelen)?
For sunshine, the best time to visit Ulaanbaatar (Sergelen) is June, then August and July. The dullest month is January (0/100, 3 mm of rain). The full month-by-month picture is in the table below.
How sunny is Ulaanbaatar (Sergelen)?
Ulaanbaatar (Sergelen) is one of the sunniest places on Earth: about 3,261 hours of sunshine a year. 90 Sunshine Score points separate June (90) from January (0), so the month you pick matters. It ranks #4 of 12 destinations in Mongolia for annual sunshine, above the national median of 3,222 hours. Rain is strongly seasonal here: roughly 66% of the year's 246 mm falls in the three months around July.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | -15° / 5°F | -24° / -11°F | 3 mm | 1 |
| February | 0 | -10° / 14°F | -22° / -8°F | 3 mm | 2 |
| March | 0 | -1° / 30°F | -13° / 9°F | 5 mm | 3 |
| April | 8 | 9° / 48°F | -4° / 25°F | 9 mm | 5 |
| May | 70 | 17° / 63°F | 1° / 34°F | 25 mm | 6 |
| June | 90 | 24° / 75°F | 9° / 48°F | 44 mm | 7 |
| July | 87 | 26° / 79°F | 12° / 54°F | 63 mm | 7 |
| August | 88 | 23° / 73°F | 10° / 50°F | 55 mm | 6 |
| September | 63 | 16° / 61°F | 2° / 36°F | 21 mm | 5 |
| October | 0 | 6° / 43°F | -5° / 23°F | 9 mm | 3 |
| November | 0 | -5° / 23°F | -15° / 5°F | 6 mm | 1 |
| December | 0 | -13° / 9°F | -22° / -8°F | 3 mm | 1 |
Nearest destinations
Head-to-head
How Ulaanbaatar (Sergelen) compares month by month: Ulaanbaatar (Sergelen) vs Irkutsk · Ulaanbaatar (Sergelen) vs Ulan Ude · Ulaanbaatar (Sergelen) vs Chita · all comparisons
Ulaanbaatar (Sergelen): questions and answers
What kind of destination is Ulaanbaatar (Sergelen)?
Ulaanbaatar (Sergelen) is a city break in Mongolia at 1,364 m elevation with a semi-arid climate.
How many hours of sunshine does Ulaanbaatar (Sergelen) get a year?
Ulaanbaatar (Sergelen) gets about 3,261 hours of sunshine a year, at its best around June.
When is the best time to visit Ulaanbaatar (Sergelen)?
The sunniest time to visit Ulaanbaatar (Sergelen) is June, when the Sunshine Score peaks at 90/100 (with August and July close behind). Expect daytime highs around 24°C / 75°F.
What is the least sunny month in Ulaanbaatar (Sergelen)?
January is the least sunny month in Ulaanbaatar (Sergelen), scoring 0/100 with about 3 mm of rain.
How strong is the sun in Ulaanbaatar (Sergelen)?
The typical midday UV index in Ulaanbaatar (Sergelen) peaks around 7 (high) in June, easing to about 1 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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