When to visit
Chiang Mai?

Discover the best time of year, based on historical climate, temperature, and precipitation.

Chiang Mai
Chiang Mai · Thailand

The best weather in Chiang Mai is from January, February, December, but considering flight prices and crowds, the best months to visit are February, March, April. — very predictable climate

Climate score
October
60

Good climate

🌧Rainy

45%ideal warm days
Predominantly warm & sunny
20dsunny streak
Long sunny stretches
1%outdoor comfort
Poor outdoor conditions
Constantly muggy— 95% days with high humidityMuch wetterDrying out through the month
Temperature
22–29°C
Very consistent temperatures · Hot nights — A/C advised
Feels like
26–35°C
Muggy
Precipitation
174mm
Heavy downpours · 16 days
Sunshine
9.3h
Mostly cloudy
Humidity (%)
84%
Constantly muggy
Annual Climate Analysis
Temperature, Rain & Feels Like
Rain
Actual Temp
Feels Like
10°20°30°40°50°JanFebMarAprMayJunJulAugSepOctNovDec
International eSIM

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Tourist Crowds
Monthly visitor flow
73
Low season
050100JanFebMarAprMayJunJulAugSepOct73NovDec
Flights to Chiang Mai

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Monthly Overview
Score949786724544363641608594
ClimatePleasantPleasantHot & dryHot & dryHot & rainyHot & rainyHot & rainyHot & rainyHot & rainyRainyPleasantPleasant
Temperature17–27°C18–30°C21–34°C24–35°C25–34°C24–31°C24–30°C23–29°C23–29°C22–29°C20–29°C18–27°C
Feels like18–29°C18–32°C23–36°C26–39°C29–39°C29–37°C29–36°C28–35°C28–36°C26–35°C23–33°C19–30°C
Precipitation25mm
2 days
21mm
1 days
10mm
2 days
56mm
6 days
183mm
16 days
220mm
22 days
333mm
25 days
390mm
27 days
328mm
25 days
174mm
16 days
49mm
6 days
25mm
2 days
Sunshine10.2h
☀︎ 91%
10.8h
☀︎ 94%
10.9h
☀︎ 90%
11.1h
☀︎ 88%
10.1h
☀︎ 78%
5.9h
☀︎ 44%
4.9h
☀︎ 37%
4.4h
☀︎ 34%
6.2h
☀︎ 50%
9.3h
☀︎ 79%
10.1h
☀︎ 90%
10.2h
☀︎ 92%
WindN · 8 km/hW · 9 km/hS · 10 km/hSW · 11 km/hS · 11 km/hS · 10 km/hS · 9 km/hS · 8 km/hS · 8 km/hN · 7 km/hN · 7 km/hN · 8 km/h
Humidity (%)71%59%52%55%70%80%85%87%86%84%79%75%
Perfect days45%9%2%1%0%0%0%1%0%5%22%55%
Dry streak24d24d21d16d7d3d3d2d3d7d17d23d
Sunny streak26d27d28d26d19d14d11d9d12d20d23d25d
Extreme heat—1%41%61%33%6%0%—————
Temperature-0.8°-1.4°+0.3°+0.8°+2.8°+1.4°+0.6°+0.0°+0.0°-0.1°+0.4°+0.3°
RainfallStableGetting wetterStableGetting wetterGetting wetterMuch wetterMuch wetterMuch wetterMuch wetterMuch wetterGetting wetterStable
Ideal warm days79%61%14%5%8%11%9%10%15%45%74%71%
Outdoor comfort17%3%1%0%0%0%0%0%0%1%3%24%
Dry week odds76%85%67%49%7%1%0%0%0%8%48%71%
Heavy rain—1%1%1%6%5%11%13%13%5%—1%
Muggy days3%1%6%34%89%100%100%100%100%95%49%10%
Oppressive days————3%5%6%8%7%1%——
Day length11.1h11.5h12.0h12.6h13.0h13.2h13.1h12.8h12.2h11.7h11.3h11.0h
Tourist CrowdsHigh seasonShoulder seasonShoulder seasonLow seasonLow seasonLow seasonShoulder seasonShoulder seasonLow seasonLow seasonShoulder seasonHigh season
Events & Festivals
JanFebMarAprMayJunJulAugSepOctNovDec
Yi Peng & Loy Krathong Festival
Chiang Mai Flower Festival
New Year's Eve Celebrations
Songkran Festival (Thai New Year)
Bo Sang Umbrella & Handicrafts Festival
Chiang Mai Design Week
Chiang Mai Marathon
Chiang Mai Street Food Festival
Dok Siew Flower Festival (Wild Himalayan Cherry)
Inthakin City Pillar Festival (Sao Inthakin)
Events & Festivals
  • Yi Peng & Loy Krathong FestivalfestivalSignature event
    November· 500k+ visitors

    This iconic festival, usually in November, sees thousands of lanterns released into the night sky and krathongs floated…

  • Chiang Mai Flower Festivalfestival
    February· 50k+ visitors

    Held annually in February, this vibrant festival showcases stunning floral floats, traditional dances, and a beauty page…

  • New Year's Eve Celebrationsholiday
    December· 50k+ visitors

    Chiang Mai hosts lively New Year's Eve celebrations, particularly around Tha Phae Gate, featuring fireworks, live music,…

  • Songkran Festival (Thai New Year)holiday
    April· 50k+ visitors

    Celebrated in April, Songkran is the traditional Thai New Year, famous for its city-wide water fights. The weather is ve…

  • Bo Sang Umbrella & Handicrafts Festivalcultural
    January· 5k+ visitors

    This charming festival, usually in January, celebrates the traditional craftsmanship of handmade umbrellas and other loc…

  • Chiang Mai Design Weekcultural
    December· 5k+ visitors

    Usually held in December, this event showcases local and international design talent through exhibitions, workshops, and…

  • Chiang Mai Marathonsports
    December· 50k+ visitors

    Typically held in early December, the Chiang Mai Marathon attracts runners from around the world, offering various dista…

  • Chiang Mai Street Food Festivalfood wine
    December, January· 5k+ visitors

    Often held during the peak tourist season in December or January, this festival celebrates Chiang Mai's renowned street…

  • Dok Siew Flower Festival (Wild Himalayan Cherry)nature
    December, January, February· 5k+ visitors

    From late December to early February, the mountains around Chiang Mai, like Doi Suthep and Doi Inthanon, burst into bloo…

  • Inthakin City Pillar Festival (Sao Inthakin)religious
    May· 5k+ visitors

    This unique Lanna religious festival, typically held in May, honors the city pillar and guardian spirits with offerings…

The story of the seasons in Chiang Mai

Standard guidebooks urge you toward February's manicured cool, but Chiang Mai is actually at its most magnetic in April, when the dry-season crowds evaporate and the entire city surrenders to the joyous, drenching chaos of Songkran.

Chiang Mai was built in 1296 as the capital of the Lan Na kingdom, an inland redoubt ringed by jagged highlands and anchored to the waters of the Ping River. Within its square perimeter of crumbling brick ramparts and algae-tinted moats, life still moves to rhythms distinct from the southern lowlands. Most travelers time their arrivals to the winter breeze, treating northern Thailand as a gentle sanctuary from tropical humidity. But judging Chiang Mai solely by temperature misses the trade-off at the core of northern Thai life: the cooler the air, the more choked the alleys become, while the hot arrival of spring cracks the city wide open into pure theater.

The Scorched Reset and the Big Soak

Every weather chart warns you away from April. The afternoon air shimmers, heat radiates off the red brick at Tha Phae Gate, and apparent temperatures push past 38 degrees. Yet April is precisely when Chiang Mai belongs to itself again. The winter tour buses have long departed, hotel courtyards fall quiet, and the city braces for the Songkran Festival with an almost giddy sense of release. When the Thai New Year arrives, the centuries-old moat turns into the frontline of a sprawling water fight where monks, street vendors, and soaking travelers trade bucketfuls of icy river water under the blinding sun. It is hot, delirious, and unforgettable—a festive purge that makes February's mild afternoons feel antiseptic by comparison.

By May, the initial monsoonal rumblings bring dramatic relief to the valley. The dust clears, the mountain ridges turn a deep jade, and spiritual life draws inward. Locals gather at Wat Chedi Luang for the Inthakin City Pillar Festival, presenting towers of fragrant blossoms to pacify the town's guardian spirits. Rain arrives in sudden, theatrical bursts that scrub the air clean before giving way to steamy, fragrant evenings where the scent of wet asphalt mingles with simmering galangal and lemongrass.

The Drenched Highlands

Summer in the north is not a beach holiday, and it makes no apologies for it. From July through September, rainfall mounts dramatically, transforming the mountain streams feeding the Ping River into rushing torrents. Doi Suthep regularly disappears behind heavy slate-colored clouds, and outdoor excursions become a gamble against downpours that can dump rain for hours without warning.

Yet this wet stretch has an undeniable cadence for travelers who prefer solitude to spotless skies. The manic pace of the Old City evaporates entirely. Mornings are often clear and cool, offering a window of quiet contemplation inside temple precincts before the midday skies darken. The highland vegetation around the valley explodes into vivid greenery, and the surrounding agricultural hamlets settle into a slow agricultural rhythm far removed from commercial tourism. If your trip demands dry shoes and mountain hikes every single afternoon, stay away. If you want cheap living, empty coffee houses, and the hypnotic drumming of tropical rain on clay roof tiles, the late summer low season holds a moody, solitary appeal.

The Clearing Sky and Lantern Hysteria

October acts as the transition hinge, shaking off the lingering squalls as northern winds sweep down from the highlands. By November, the rains have dried to negligible showers, the air turns crisp, and Chiang Mai hits an intensity unlike anywhere else in Southeast Asia. This is the month of the Yi Peng and Loy Krathong festivals, when the city draws its absolute peak crowd of the entire year.

During these festival nights, thousands of paper lanterns drift upward into the dark mountain sky while delicate, candle-bearing floats made of banana trunk bob gently down the Ping River. The spectacle is breathtaking, but the logistics are ruthless. Roads seize around the riverbanks, walking lanes through the inner city gridlock, and reservations vanish months in advance. November offers the classic postcard imagery, but it demands patience and tolerance for wall-to-wall crowds in exchange.

The Winter Delusion: Polished, Pretty, and Packed

Conventional wisdom insists that December and January are the pinnacle of the northern calendar. On paper, it makes sense: morning temperatures hover in the brisk twenties, daytime skies are uninterrupted blue, and events like Chiang Mai Design Week and the Chiang Mai Street Food Festival spill effortlessly into public squares. Runners take over the boulevards for the Chiang Mai Marathon, while day-trippers head up Doi Suthep and Doi Inthanon to catch the pink blossoms of the Dok Siew Flower Festival. Around New Year's Eve, crowds pack the perimeter of Tha Phae Gate for fireworks and mass revelry.

February then arrives with what meteorologists call the year's most perfect weather. The Chiang Mai Flower Festival carpets the town in floral tapestries, and nearby craft centers like Bo Sang host umbrella-making fairs under dry, gentle sunshine. But this neatness comes at a steep price: February is crowded, carefully curated, and surprisingly expensive. The city operates as a polished showroom for international tourists rather than an organic, breathing northern hub. It is undeniably pleasant, but it lacks the untamed heart and local spirit you discover when you brave April's heat instead.

What to do

Things to do in Chiang Mai

Top sights and attractions to build your days around once you know when to go.

Places from Wikidata and Wikipedia.

Tours & tickets in Chiang Mai
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Frequently asked questions

What is the best time to visit Chiang Mai?

The best weather in Chiang Mai is from February, January, December, but considering flight prices and crowds, the best months to visit are April, February, March (17–35 °C).

What is the weather like in Chiang Mai?

Chiang Mai has a Tropical climate with an overall score of 6.6/10. Annual temperatures range from 17 °C to 35 °C.

What is the hottest month in Chiang Mai?

The hottest month in Chiang Mai is April, with average highs of 35 °C and lows of 24 °C.

What is the rainiest month in Chiang Mai?

The rainiest month in Chiang Mai is August, with an average of 390 mm of precipitation.

When is peak season in Chiang Mai?

Peak season in Chiang Mai is January, December. This is the most popular period, with the highest tourism levels and prices.

When is shoulder season in Chiang Mai?

Shoulder season in Chiang Mai falls in February, March, July, August, November. It offers a good balance of decent weather and lower prices compared to peak season.