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Khanom Weather in September
With daytime temperatures of 31°C (88°F) and nighttime lows of 26°C (79°F), September in Khanom brings very high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 165 mm (6.5 in) falls on average.
Rainfall in Khanom in September
Historically, September sees about 18 days of rain, with a monthly average of 165 mm (6.5 in). Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Khanom in September
If you're visiting Khanom in September, expect highs of 31°C (88°F) and overnight lows around 26°C (79°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights stay warm at around 26°C (79°F), so light bedding and good ventilation are worth thinking about.
Sunshine in Khanom in September
The city usually sees around 145 hours of sunlight, indicating a moderately sunny period.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January typically offers the best weather for Khanom.
Khanom Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
31°C (88°F)
Chance of Rain
59%
Precipitation
165 mm (6.5 in)
Rainy days
18 days
Humidity
79% *
Sunshine
145 hours *
Percentage Sunshine
*
* Data from: Koh Samui, Thailand (36 KM, 22 Miles).
Khanom Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Khanom - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Khanom typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Khanom in September
Browse day-by-day weather records for Khanom spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Khanom historical weather extremes in September
According to our 50 years of weather records for Khanom, the following extremes were recorded between 1976 and 2026.
- On September 6, 2026, temperatures climbed to 36°C (97°F), marking the warmest September day on record.
- On September 30, 1979, Khanom saw its coldest September day with temperatures maxing out at 26°C (79°F).
- Nighttime temperatures dropped to 21°C (70°F) on September 11, 1984, marking the coldest September night on record.
- Peak precipitation in September occurred on September 22, 1983, when 99 mm (3.9 in) of precipitation was measured.
Best Places in Thailand in September
Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Khanom 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! Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in Khanom in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping7/10 -
Outdoor sports7/10
Khanom 3-Day Forecast
More climate data for Khanom
Temperature Rainfall Sunshine Humidity
See the full Khanom climate overview or explore weather in Thailand.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bangkok
34°C (93°F) Chiang Mai33°C (91°F) Jomtien Beach32°C (90°F) Hua Hin32°C (90°F) Ao Nang Beach30°C (86°F) Koh Samui30°C (86°F) Ko Lanta30°C (86°F) Patong Beach29°C (84°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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