Golden Triangle Weather in September

Golden Triangle in September sees very high temperatures, with highs around 32°C (90°F) and overnight lows of 24°C (75°F). With the rainy season in full effect, expect around 300 mm (12 in) of rainfall and regular showers throughout the month.

Rainfall in Golden Triangle in September

As part of the rainy season, Golden Triangle sees around 18 days of rain in September, with an average of 300 mm (12 in). The rain this month falls heavily when it arrives. Late afternoons in particular can see strong showers, so waterproofs are worth keeping handy.

Temperature in Golden Triangle in September

Expect highs of 32°C (90°F) in Golden Triangle in September, with nights dropping to around 24°C (75°F). It's usually most comfortable outside during the morning and later in the day. At 24°C (75°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.

Sunshine in Golden Triangle in September

You can expect a moderate amount of sunlight, with approximately 145 hours. Even though this month is part of the wet season, you can still see the sun occasionally.

If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Golden Triangle. Our weather planner can help you explore destinations with more pleasant weather conditions.

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For a detailed overview over the year and the best time to visit Thailand, check out our Golden Triangle's climate page.

Golden Triangle Temperature in September

Min Temperature 24°C (75°F)  

Max Temperature 32°C (90°F)  

Chance of Rain 59%  

Precipitation 300 mm (12 in)  

Rainy days 18 days  

Humidity 83% *  

Sunshine 145 hours *  

Percentage Sunshine *  

* Data from: Chiang Rai, Thailand (56 KM, 34 Miles).

What to Wear in Golden Triangle in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Golden Triangle in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Thailand, check out our Golden Triangle's climate page.

More climate data for Golden Triangle

Temperature Rainfall Sunshine Humidity

See the full Golden Triangle climate overview or explore weather in Thailand.