30YearWeather
Ulaanbaatar in May
Ulaanbaatar weather in May - Mongolia
🌤️Mild & Comfortable

Ulaanbaatar Weather in May

Plan your May trip to Ulaanbaatar, Mongolia. Based on 30 years of NASA data, expect temperatures of 16°C (high) to 2°C (low), with 12% rain probability and 8 hours of daily sunshine. Great conditions with only 0 rainy days expected.

Avg High
16°C

Hottest around day 22

Avg Low
2°C

Coolest around day 1

Rainy Days
0days

12% avg rain chance

Sunshine
8hrs/day

Spring season

Ulaanbaatar May Weather Calendar

Click any day to see detailed weather information

Currency

MNT

Mongolian tögrög

Language

Mongolian

Driving

Right side

Connect

On Peace Avenue at the southwest corner ...

Safety

High Safety

GPI: 1.775

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Health & Safety Advisory

CDC travel health recommendations

8 Recommendations
COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Recommended for unvaccinated travelers one year old or older going to Mongolia.Infants 6 to 11 months old should also be vaccinated against Hepatitis A. The dose does not count toward the routine 2-dose series.Travelers allergic to a vaccine component should receive a single dose of immune globulin, which provides effective protection for up to 2 months depending on dosage given.Unvaccinated travelers who are over 40 years old, are immunocompromised, or have chronic medical conditions planning to depart to a risk area in less than 2 weeks should get the initial dose of vaccine and at the same appointment receive immune globulin.

Hepatitis B

Recommended for unvaccinated travelers of all ages traveling to Mongolia.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are commonly found in Mongolia.Rabies is also present in some terrestrial wildlife species.If rabies exposures occur while in Mongolia, rabies vaccines may only be available in larger suburban/urban medical facilities.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Tick-borne Encephalitis

For travelers moving or traveling toTBE-endemic areasTBE vaccineis recommended for persons who will haveextensiveexposure to ticks based on their planned outdoor activities and itinerary.TBE vaccine may be considered for persons who might engage in outdoor activities in areas ticks are likely to be found.

+2 more

Source: CDC Travelers' Health

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Is May a Good Time to Visit Ulaanbaatar?

👍Very good conditions overall
Short Answer

May delivers Ulaanbaatar's best weather - 16°C days, rare rain (12%), and comfortable 47% humidity. Book accommodation early as this is well-known as an excellent period.

Decision Factors

Vaccinations required

Yellow Fever

Excellent dry conditions

Only 12% rain probability - ideal for outdoor activities

Health precautions needed

Be aware of: Leptospirosis, Hantavirus, Tuberculosis (TB)

Plenty of sunshine

11.7h of sunshine daily

Shoulder season - balanced conditions

50% of peak - good value with moderate crowds

Good For

  • 👨‍👩‍👧‍👦
    Families with children

    Comfortable 16°C temperatures and low 12% rain risk

  • 🥾
    Outdoor enthusiasts

    Ideal hiking conditions: 16°C, 12% rain chance

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💑
    Honeymoon couples

    Wedding score 86/100 with romantic weather conditions

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

Who Should Avoid

Suitable for most traveler types

930 observations30-year historical data
Confidence: 90%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Ulaanbaatar in May averages 16°C with 12% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Ulaanbaatar in May

What are the temperatures in Ulaanbaatar in May?

Daytime highs average 16°C, nights drop to 2°C. There's a significant day/night temperature swing.

How many rainy days in Ulaanbaatar in May?

Expect around 0 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Ulaanbaatar in May?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is May peak season in Ulaanbaatar?

This is shoulder season—moderate prices and manageable crowds.