Weather Kampong Thom Today – Temperature, Rain & Hourly Forecast
Monday, 21/09/2026
- High/Low
- 29°/25°
- Humidity
- 86%
- Wind
- 3 km/h
- Rainfall
- 17.4 mm
- UV index
- 5.5
- Pressure
- 1012 hPa
- Sunrise
- 05:49
- Sunset
- 17:57
Today
Summary
Kampong Thom gets a cooler-than-usual day, 25–29°C, under light showers.
Rain concentrates around 00:00–00:00 with about 17.3 mm — worth taking an umbrella.
Maximum UV of 5.5 at 14:00 — wear a hat for longer stints outdoors.
Humidity of 86% pushes the felt temperature to 32°C.
Wind runs 10 km/h out of the north-west.
Temperatures hold steady near 29°C through the week.
The wettest day ahead is Tuesday 22/09 with about 38 mm.
Sunrise 05:49, sunset 17:57.
Best time to visit
48-hour forecast
Days ahead
| Today | Low/High | Chance of rain | Rainfall | |
|---|---|---|---|---|
| Today 21/09 | Light showers | 25°29° | 100% | 17.4 mm |
| Tomorrow 22/09 | Thunderstorm | 24°28° | 100% | 37.8 mm |
| Wednesday 23/09 | Thunderstorm | 24°29° | 100% | 22.3 mm |
| Thursday 24/09 | Thunderstorm | 24°29° | 98% | 34.5 mm |
| Friday 25/09 | Thunderstorm | 24°30° | 98% | 25.5 mm |
Monthly averages
Common questions
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Upstream rainfall · Tonlé Sap
- Past 72 hours
- 36 mm
- Next 72 hours
- 107 mm
- Status
- Elevated
- Water may arrive
- 27/09
| Upstream sampling points | Past 72 hours | Next 72 hours |
|---|---|---|
| Kampong Thom | 44 mm | 104 mm |
| Battambang | 23 mm | 132 mm |
| Pursat | 35 mm | 110 mm |
| Siem Reap | 40 mm | 100 mm |
| Cardamom highlands | 38 mm | 92 mm |
This measures upstream rainfall, not river level. Official levels and discharge come from the Mekong River Commission (MRC). Upstream rainfall causes the level, and is visible several days earlier. MRC
Upstream rainfall · Stung Sen and Stung Sreng
- Past 72 hours
- 43 mm
- Next 72 hours
- 93 mm
- Status
- Elevated
- Water may arrive
- 25/09
| Upstream sampling points | Past 72 hours | Next 72 hours |
|---|---|---|
| Preah Vihear | 42 mm | 79 mm |
| Oddar Meanchey | 40 mm | 104 mm |
| Dangrek range | 48 mm | 94 mm |
This measures upstream rainfall, not river level. Official levels and discharge come from the Mekong River Commission (MRC). Upstream rainfall causes the level, and is visible several days earlier. MRC
Tonlé Sap
The Mekong now stands higher than the lake, so the Tonlé Sap river runs backwards and pumps water in. Fish move upstream into the lake to spawn. This is when the lake expands fastest.
Mekong basin rainfall: 39 mm over the past 72 hours, 30 mm forecast for the next 72.
This is a seasonal estimate combined with basin rainfall, not a measured level. Official water level and discharge come from the Mekong River Commission (MRC). The timing of the reversal varies year to year and has shifted noticeably over the past two decades.
Why the lake reverses