Climate · Ulaanbaatar

Ulaanbaatar in May

Mild and mostly dry, as the days lengthen.

Typical weather, averaged over 30 years

May in Ulaanbaatar is mild: highs near 63°F, lows near 34°F. Rain falls on about two days a week, and the days lengthen by 1 hour 9 minutes from the first week to the last.May in Ulaanbaatar is mild: highs near 17°C, lows near 1°C. Rain falls on about two days a week, and the days lengthen by 1 hour 9 minutes from the first week to the last.

High
63°F17°Caverage
Low
34°F1°Caverage
Wet days
2a week · 22% of days
Daylight
15h 09mon average

Is May a good time to visit Ulaanbaatar?


May sits outside Ulaanbaatar's best months, which run from June to August. Expect mild days and rain on about two days a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How May sits in the year

week by week

Temperature

Highs near 63°F in May, against 12°F to 78°F through the year.Highs near 17°C in May, against -11°C to 26°C through the year.

Chance of a wet day

22% of days in May, against 3% to 37% through the year.

Cloud cover

48% cover in May, against 40% to 50% through the year.

Daylight

15h 09m in May, against 8h 27m to 15h 57m through the year.

Week by week, lightly smoothed, with May shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side


  1. April49°9°low 23°low -5°1 wet day a weekRain on about one day a week.
  2. May63°17°low 34°low 1°2 wet days a weekRain on about two days a week.
  3. June74°23°low 46°low 8°2 wet days a weekRain on about two days a week.

Where Ulaanbaatar sits, in May

Asia/Ulaanbaatar

this place
typical high in May 40°F4°C95°F35°C
Sunrise, mid-May
5:15 AMsets 8:22 PM
Above the sea
1,290 mupland
Latitude
47.9°Nnorthern hemisphere
Nearest of ours
Bulgan511 km south-west

The land around Ulaanbaatar, shaded by its typical high in May, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Mongolia in May

high · low · wet days

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Ulaanbaatar. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,290 m) against the climate model's (1,502 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,290 m) against the climate model's (1,502 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.