Peak in April
Coolest in December
Heavy in August
Peak in dry season
Chiang Mai Monthly Weather Guide
Click any month to explore daily weather forecasts
January
February
March
April
May
June
July
August
September
October
November
December
Essential Travel Info for Chiang Mai
Currency
THB
฿ Thai baht
Language
Thai
Driving
Left side
Connect
Many guesthouses, hotels, cafes, bars, r...
Safety
Moderate Safety
GPI: 2.098
Best Time to Visit Chiang Mai
Location, climate overview & historical trends
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📍 18.7883° N, 98.9853° E
Open in Google MapsChiang Mai is a prominent destination in Thailand.
Located at 18.79°N latitude,Chiang Mai experiences a tropical climate with warm temperatures year-round.
Based on 30 years of data, April is the warmest month (avg. 35°C), while December is the coolest. August sees the most rain (74% chance), making February the driest month.
Historical Climate Trend
30-Year Analysis+0.32°C
Total over 30 years
+0.11°C
Per decade
Linear regression analysis of historical maximum temperatures for Chiang Mai, based on 1995-2024 satellite data from NASA POWER.
Best Time to Visit
NASA POWER Data (1991-2021)January, November, December
Best months to visit
30°C
Avg High
Based on 30 years of NASA satellite data,Chiang Mai receives approximately 986mm of rainfall annually. These months offer optimal temperatures and minimal rain probability for your visit.
Climate Trends
EXCLUSIVE1995-2040 Temperature Trend
1995 Avg
30.4°
2024 Avg
30.6°
2040 Proj
31°
+0.11°C
per decade (observed)
+0.27°C
per decade (CMIP6)
🌡️ Chiang Mai has warmed by +0.3°C since 1995. By 2040, an additional +0.4°C is projected (based on CMIP6 rate of 0.272°C/decade), for a total of +0.8°C from 1995 baseline.
NASA POWER (1995-2024) + CMIP6 (CMCC_CM2_VHR4, EC_Earth3P_HR, FGOALS_f3_H, HiRAM_SIT_HR, MRI_AGCM3_2_S, NICAM16_8S)
Travel Intelligence
Exclusive flight analytics & health data for Chiang Mai
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Flight Connectivity Analysis
Airport traffic data & seasonal patterns
Balanced traffic
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Peak
Jan
Low
Jun
Monthly Traffic Distribution
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Health & Safety Advisory
CDC travel health recommendations
COVID-19
All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.
Chikungunya
There iselevated chikungunya riskin Thailand.Chikungunya vaccinationmay be considered for people traveling or moving to this location if they are planning to stay for an extended period of time (for example, 6 months or more).
Cholera
There is no longer active cholera transmission and vaccine is not recommended.
Hepatitis A
Recommended for unvaccinated travelers one year old or older going to Thailand.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 younger than 60 years old traveling to Thailand. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Thailand.
Japanese Encephalitis
Recommended for travelers whoAre moving to an area with Japanese encephalitis to liveSpend long periods of time, such as a month or more, in areas with Japanese encephalitisFrequently travel to areas with Japanese encephalitisConsider vaccination for travelersSpending less than a month in areas with Japanese encephalitis but will be doing activities that increase risk of infection, such as visiting rural areas, hiking or camping, or staying in places without air conditioning, screens, or bed netsGoing to areas with Japanese encephalitis who are uncertain of their activities or how long they will be thereNot recommended for travelers planning short-term travel to urban areas or travel to areas with no clear Japanese encephalitis season.
+5 more
Source: CDC Travelers' Health
View Complete Health GuideChiang Mai Climate Data by Month
Historical temperature and precipitation averages
| Month | Avg High (°C) | Rain Probability (%) | Status |
|---|---|---|---|
| January | 28°C | 5% | ✨ Perfect |
| February | 31°C | 3% | 🔥 Hot |
| March | 34°C | 5% | 🔥 Hot |
| April | 35°C | 16% | 🔥 Hot |
| May | 33°C | 44% | 🌧️ Rainy |
| June | 31°C | 58% | 🌧️ Rainy |
| July | 30°C | 66% | 🌧️ Rainy |
| August | 29°C | 74% | 🌧️ Rainy |
| September | 29°C | 66% | 🌧️ Rainy |
| October | 29°C | 41% | 🌧️ Rainy |
| November | 29°C | 16% | 😊 Pleasant |
| December | 27°C | 4% | ✨ Perfect |
Weather in Cities Near Chiang Mai
Explore climate data for popular destinations within easy reach
Luang Prabang
Laos
Yangon
Myanmar
Vientiane
Laos
Mandalay
Myanmar
Bangkok
Thailand
Sapa
Vietnam
Compare weather conditions with nearby destinations for your trip planning
Compare Chiang Mai Weather vs Popular Destinations
Similar Climate Destinations
Discover destinations with weather similar to Chiang Mai
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These destinations share similar weather patterns with Chiang Mai. Perfect alternatives if you're looking for the same climate in a different location.
Chiang Mai Weather FAQ
When is the best time to visit Chiang Mai?
Honestly, look for months with mild temperatures (20°C-25°C) and low rain chance. Based on historical data, January, November, December are usually great choices.
When is the hottest month in Chiang Mai?
April is historically the hottest month in Chiang Mai with average highs of 35°C.
When does it rain the most in Chiang Mai?
August typically sees the highest probability of rain (74%).
Is Chiang Mai expensive?
Prices vary by season. The "Perfect" weather months usually coincide with peak tourist season and higher prices, while the rainy or cold months offer better deals.