Cambodia weather in September
Cambodia in September averages 28°C (83°F) and 254 mm of rain. It is one of the wetter months of the year here.
Of the twelve months in Cambodia, September is the sixth coldest and the second wettest.
- Average temp
- 28°C (83°F)
25–32°C · 76–90°F
- Rainfall
- 254 mm
A wet month
- Sunshine
- —
What is Cambodia like in September?
Daytime
Days are hot, often above 32°C.
Rain
Expect frequent rain — this is a wet month.
Evening
Evenings stay warm.
What should I pack for Cambodia in September?
High-factor sun cream
With daytime highs around 32°C, burn time is short even in shade.
Sunglasses and a brimmed hat
Midday glare is the part people underpack for, not the heat itself.
Loose cotton or linen
Synthetics stop working once you are sweating through them all day.
A refillable water bottle
Daily highs this warm need roughly double the water a temperate day does.
A proper waterproof, not a folding umbrella
254 mm in the month usually arrives as heavy bursts that an umbrella will not cover.
A dry bag for phone and documents
Worth it for one downpour caught between the taxi and the door.
September compared with August and October
September in Cambodia is about the same temperature as August and 69 mm wetter than it, which averages 29°C (84°F).
September in Cambodia is about the same temperature as October and about as wet as it, which averages 28°C (82°F).
Daylight in Cambodia in September
On 15 September the sun is up for 12 hours 12 minutes in Cambodia, rising about 05:49 and setting about 18:00 local time.
September ends 20 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 40 minutes short of June, the longest-lit month here.
Travel guides for Cambodia
What to read before you book.
Cambodia weather by month
TemperatureRainfall
How September compares with the rest of the year
September is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 27°C / 80°F | 24 mm |
| February | 28°C / 83°F | 14 mm |
| March | 30°C / 85°F | 43 mm |
| April | 31°C / 87°F | 85 mm |
| May | 30°C / 87°F | 130 mm |
| June | 30°C / 85°F | 161 mm |
| July | 29°C / 84°F | 168 mm |
| August | 29°C / 84°F | 185 mm |
| September | 28°C / 83°F | 254 mm |
| October | 28°C / 82°F | 260 mm |
| November | 28°C / 82°F | 113 mm |
| December | 27°C / 80°F | 38 mm |
Check another month
This is the month you are reading. Change either side to look at another.
FAQs about Cambodia in September
September climate averages for Cambodia, 1991–2020.
Cambodia averages 28°C (83°F) in September, ranging from about 25°C (76°F) at night to 32°C (90°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Yes, a lot. September brings about 254 mm, which makes it one of the wetter months here — expect heavy bursts rather than all-day drizzle.
They are about the same. September averages 28°C (83°F) and October 28°C (82°F), so temperature alone will not decide between them.
September is about as warm as August, and 69 mm wetter.
It is outside the easiest window. The most comfortable stretch here is November to March; September sits outside it, which usually means more heat, more rain, or both — worth it if you would rather have the place to yourself.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what September is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 12 hours 12 minutes of daylight in mid-September, against 12 hours 52 minutes in June and 11 hours 24 minutes in December.
On 15 September, sunrise is about 05:49 and sunset about 18:00 local time. Both shift across the month — the month ends 20 minutes shorter than it starts.
