Weather in Chiang Rai — today
Now in Chiang Rai
☀️
+29°
Clear
Feels like +34° · humidity 57%
Today 12.9: +29° / +21°
🕐 13:25
Wind
10 km/h
UV index
9
Air (AQI)
63 · Poor
Precipitation
37%
Humidity
57%
Pressure
1014 hPa
Sunrise / sunset
06:07 / 18:26
👕 What to wear today
Warm — a T-shirt and light trousers or shorts.
🧴 SPF 50Feels warmer by 5°
Weather for an activity:
Detailed weather information for Chiang Rai
Today, 12 September, Saturday, in Chiang Rai (Thailand): cloudy, light rain in places, warm. During the day the air will warm up to +29°, at night around +21°. Due to high humidity it feels like +34°. UV is extreme (index 9) — better stay in the shade at midday. Wind up to 13 km/h. Brief rain is possible — an umbrella won't hurt. Light summer clothing will do — a T-shirt and shorts or light trousers. The sun will rise at 06:07 and set at 18:26 — daylight lasts 12 hours.Hourly weather in Chiang Rai
💧 The bars at the bottom show the hourly precipitation probability. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).
Weather in Chiang Rai for 14 days
Tap a day to expand it by time of day and open the full forecast. The bar shows the range from the night low (left) to the day high (right).
▶
Today 12.9
🌦️
💧 37%
+21° +29°
Morning
🌦️
+24°
Day
🌦️
+29°
Evening
🌇
+27°
Night
🌙
+21°
▶
Tomorrow 13.9
🌦️
💧 8%
+21° +30°
Morning
🌤️
+24°
Day
🌦️
+30°
Evening
🌇
+27°
Night
🌙
+21°
▶
Mon 14.9
🌦️
💧 31%
+22° +31°
Morning
🌦️
+25°
Day
🌦️
+31°
Evening
🌇
+29°
Night
🌙
+22°
▶
Tue 15.9
⛈️
💧 57%
+24° +31°
Morning
⛈️
+27°
Day
⛈️
+31°
Evening
🌇
+29°
Night
🌙
+24°
▶
Wed 16.9
⛈️
💧 70%
+23° +30°
Morning
⛈️
+26°
Day
⛈️
+30°
Evening
🌇
+28°
Night
🌙
+23°
▶
Thu 17.9
⛈️
💧 73%
+23° +29°
Morning
⛈️
+25°
Day
⛈️
+29°
Evening
🌇
+28°
Night
🌙
+23°
▶
Fri 18.9
⛈️
💧 86%
+22° +28°
Morning
⛈️
+24°
Day
⛈️
+28°
Evening
🌇
+27°
Night
🌙
+22°
▶
Sat 19.9
🌦️
💧 77%
+23° +29°
Morning
🌦️
+25°
Day
🌦️
+29°
Evening
🌇
+28°
Night
🌙
+23°
▶
Sun 20.9
⛈️
💧 76%
+22° +30°
Morning
⛈️
+25°
Day
⛈️
+30°
Evening
🌇
+28°
Night
🌙
+22°
▶
Mon 21.9
🌦️
💧 63%
+22° +30°
Morning
🌦️
+25°
Day
🌦️
+30°
Evening
🌇
+28°
Night
🌙
+22°
▶
Tue 22.9
🌦️
💧 51%
+23° +29°
Morning
🌦️
+25°
Day
🌦️
+29°
Evening
🌇
+28°
Night
🌙
+23°
▶
Wed 23.9
🌦️
💧 46%
+22° +29°
Morning
🌦️
+25°
Day
🌦️
+29°
Evening
🌇
+27°
Night
🌙
+22°
▶
Thu 24.9
⛈️
💧 57%
+22° +28°
Morning
⛈️
+24°
Day
⛈️
+28°
Evening
🌇
+27°
Night
🌙
+22°
▶
Fri 25.9
🌦️
💧 63%
+22° +25°
Morning
🌦️
+23°
Day
🌦️
+25°
Evening
🌇
+24°
Night
🌙
+22°
🗺️ Precipitation radar
Precipitation radar (RainViewer) over a clean base map — updates every 5–10 minutes. Colours show nearby precipitation; if there is none, the map is simply clear — that is normal. Zoom with + / −.
Rain intensity:lightmoderateheavy
🎯 What to do in this weather — indices of the day
Comfort score from 0 (bad) to 100 (excellent), calculated from the day's weather. For “rain” and “UV” a percentage/risk level is shown.
🏃 Running
23 / 100
comfort for running · So-so
🧴 UV
81%
extreme · high
☂️ Rain
37%
possible · moderate
✨ Stars
62 / 100
evening visibility · Average
🧺 Laundry drying
39 / 100
will dry outside · So-so
🚗 Car wash
51 / 100
no rain expected · Average
🌫️ Air quality
63
Poor air
European AQI
PM2.5: 13PM10: 14O₃: 125NO₂: 1
People with allergies or asthma should reduce time outdoors.
🌅 Sun, moon and sea
Sunrise
06:07
Sunset
18:26
Golden hour
17:57
Daylight
12 h (-1 min vs yesterday)
Chiang Rai climate by month
Long-term averages. Hover over a bar for details. The forecast for a specific month is a combination of the climate normal and the model forecast for the coming weeks.
+27°
+15°
Jan
+30°
+16°
Feb
+33°
+19°
Mar
+34°
+22°
Apr
+31°
+23°
May
+30°
+24°
Jun
+30°
+23°
Jul
+29°
+23°
Aug
+29°
+23°
Sep
+28°
+21°
Oct
+27°
+18°
Nov
+25°
+15°
Dec
swipe sideways →
Bar color shows temperature:frostcoolcomfortablewarmhot— best months to visit
| Month | Day | Night | Precipitation | What to pack and what makes the month notable (events, nuances) |
|---|---|---|---|---|
| January | +27° | +15° | 22 mm | A comfortable month: +27° by day without exhausting heat. 😊 light summer clothing. Weather-wise, one of the three best months to visit. |
| February | +30° | +16° | 14 mm | Warm and comfortable: +30° by day, +16° at night. 😊 light summer clothing. One of the driest months — rain is very unlikely. |
| March | +33° | +19° | 42 mm | Up to +33° by day — hot, yet not muggy; mornings and evenings are pleasant. ☀️ water and sunscreen. |
| April | +34° | +22° | 120 mm | A hot, dry month: +34° daytime, warm pleasant evenings. One of the wettest months (120 mm): downpours can derail plans. ☀️ water and sunscreen. This is the hottest month of the year in Chiang Rai. |
| May | +31° | +23° | 277 mm | Warm and comfortable: +31° by day, +23° at night. It's a rainy month (277 mm) — an umbrella is a must. 😊 light summer clothing. |
| June | +30° | +24° | 289 mm | Gentle warmth — about +30° daytime, great walking weather. Frequent rain (289 mm over the month) — keep indoor backup plans. 😊 light summer clothing. The longest daylight hours of the year — more time for everything. |
| July | +30° | +23° | 387 mm | A comfortable month: +30° by day without exhausting heat. One of the wettest months (387 mm): downpours can derail plans. 😊 light summer clothing. Statistically the wettest month of the year. |
| August | +29° | +23° | 379 mm | Warm and comfortable: +29° by day, +23° at night. It's a rainy month (379 mm) — an umbrella is a must. 😊 light summer clothing. |
| September | +29° | +23° | 290 mm | Gentle warmth — about +29° daytime, great walking weather. Frequent rain (290 mm over the month) — keep indoor backup plans. 😊 light summer clothing. |
| October | +28° | +21° | 140 mm | A comfortable month: +28° by day without exhausting heat. One of the wettest months (140 mm): downpours can derail plans. 😊 light summer clothing. |
| November | +27° | +18° | 50 mm | Warm and comfortable: +27° by day, +18° at night. 😊 light summer clothing. |
| December | +25° | +15° | 27 mm | Ideal weather: +25° daytime — neither hot nor cold. 😊 light summer clothing. This is the coldest month of the year. |
When to visit Chiang Rai
✅ Recommended time to visit
🌟 Best time: January, February, December
Daytime air+25…+30°
Precipitationrare
Why: comfortable +25…+30° by day, little rain.
⚠️ Doable, with caveats
🌤️ Shoulder season: March, April, May, June, October, November
Daytime air+27…+34°
Precipitationoften
Why: noticeable rain risk (42–289 mm/month) — pack an umbrella and backup plans.
🔴 Not the best time
🌤️ Shoulder season: July, August, September
Daytime air+29…+30°
Precipitationoften
Why: the rainy season (290–387 mm/month) — downpours almost daily.
Bottom line: the best time to visit Chiang Rai is December – February, and the most comfortable months are January, February, December. The toughest months to visit are July, August, September: frequent rain.
🌡️ Today vs the climate normal
Today's high
+29°
Normal for September
+29°
Deviation
0° within normal
A year ago on this day
+29°
Record for this date
+32° (1947)
The normal, “a year ago” and the record come from the weather archive since 1940 (Open-Meteo / ERA5).
Weather archive for Chiang Rai
📅 See what the weather was like on any day since 1940. For example: “what was the weather on March 2, 2021”.
Show the archive for the selected day →
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Weather in cities near Chiang Rai
Frequently asked questions about the weather in Chiang Rai
What is the weather in Chiang Rai right now?＋
Clear, +29°, feels like +34°.
Will it rain in Chiang Rai today?＋
Yes: 37% chance, 3 mm.
When is the best time to visit Chiang Rai?＋
Best time to visit — December – February.
What time are sunrise and sunset in Chiang Rai?＋
Sunrise 06:07, sunset 18:26.
Does it snow in Chiang Rai in winter?＋
No, it practically never snows.
What is the climate in Chiang Rai by month?＋
Summers up to +34° in April, winters around +15° in December; the wettest month is July.
How hot is it in Chiang Rai in summer?＋
☀️ Very hot. Drink more water, avoid the midday sun, sunscreen is needed.