Live Rain Radar for Kanchanaburi
Monitor rain across Kanchanaburi’s river valleys and mountain forests. Updates every 5 minutes.
Local Weather Context
Kanchanaburi is Thailand’s third-largest province, stretching from the Central Plains deep into the Tenasserim Hills along the Myanmar border. The Kwai Yai and Kwai Noi rivers meet at Kanchanaburi city before flowing into the Mae Klong River. The rugged western mountains receive heavy monsoon rainfall that feeds the strategically important Vajiralongkorn (Khao Laem) and Srinagarind dams.
Seasons
Wet season (May–October)
The southwest monsoon brings heavy rain, especially to the western mountain areas, which receive over 2,000 mm annually. Lowland areas around the city average 150–200 mm per month during the peak monsoon. Flash flooding along the Kwai rivers and mountain streams can be sudden and dangerous.
Transition months (November, April)
November sees rapid drying as the monsoon retreats. April brings extreme heat in the river valleys, with temperatures sometimes reaching 42°C before pre-monsoon storms break the heat.
Dry season (December–March)
Pleasant temperatures and minimal rainfall. The cool season attracts tourists to Erawan Falls, Hellfire Pass, and the River Kwai Bridge. Reservoir levels start to fall as outflow exceeds inflow.
NEW! Tap Anywhere to Inspect
2 Feb 2026One tap, and the rain at that precise spot tells its own story—showing intensity, precipitation type, cloud and air temperatures, and live national alerts, while making even the smallest rain pockets easy to identify and compare.
Who Needs Rain Radar Here
Dam operators
Vajiralongkorn and Srinagarind dams manage water for western Thailand’s power generation, irrigation, and flood prevention. Monitoring rainfall in the upstream catchment is vital for dam safety and planning water releases.
Adventure tourism operators
Rafting on the Kwai rivers, trekking in Erawan National Park, and visiting waterfalls all rely on weather conditions. Heavy rain upstream can make rivers hazardous hours before it rains locally.
Gem miners
Kanchanaburi’s sapphire mining areas in Bo Phloi and nearby districts halt operations during heavy rain when open pits flood.
Cross-border logistics
The Phu Nam Ron border crossing with Myanmar and Highway 323 through the mountains require weather monitoring for safe travel.
Radar Coverage
RainViewer covers Kanchanaburi city and the river valleys effectively. Western mountain areas near the Myanmar border have variable coverage due to the terrain, but storms moving east towards populated areas are tracked well. The wide zoom level displays weather patterns across the entire province.
What Our Users Say
-
“A little overenthusiastic at times with rain predictions, but it's accurate and spot on for radar images, and it's the one radar app I've kept and not uninstalled”
Duncan Stewart -
I must update my feedback once again – this is still the best brain app in the app store. The issue I was experiencing was with my phone, not this top-tier app. One feature I particularly like is the widgets.
Jim Tigs
Explore Radar Coverage
FAQ
Does radar cover Erawan National Park?
The park and surrounding areas have good coverage. Mountain terrain may create some shadows in deep valleys, but approaching storms are visible well in advance.
Can radar help predict river level changes?
Heavy rainfall shown on radar over the upper Kwai Yai and Kwai Noi catchments indicates rising river levels in Kanchanaburi city, usually 4–8 hours later depending on intensity.
Why is the zoom level wider for Kanchanaburi?
Kanchanaburi province is very large, and weather affecting the city often develops in the western mountains. The wider view allows you to see approaching storm systems from further away.
See mountain rain before it reaches the river
Kanchanaburi’s rain begins in the Tenasserim Hills and arrives in the valley without warning. The map updates every 5 minutes — often 2–5 minutes faster than other apps — so by the time a cell is hitting the upper Kwai catchment, you’ve already seen it before the water starts rising at the trails or raft houses.
Rain Viewer Essential gives you:
- A 2-hour rain forecast in 5-minute intervals — not hourly blocks, so you can see the precise window when the mountain storm clears and the Erawan upper tiers or Death Railway route are safe again
- Rain alerts that trigger before rain arrives — set the Erawan upper catchment, your River Kwai raft house, or the Route 323 mountain section and get notified while you can still change your plans
- Direction arrows on the map — so even when the animation is unclear, you can see whether the cell is tracking down the Kwai Noi valley towards the tourist strip or pushing east towards Suphan Buri
- 48 hours of radar history — see how yesterday’s mountain storm moved through the Tenasserim Hills and recognise the same pattern building upstream today
- Multiple locations — track rain at the Erawan upper catchment, the Bridge on the River Kwai, and your Route 323 return drive at the same time
A 7-day forecast tells you August will be wet. Rain Viewer tells you whether the upper catchment is clear enough to hike to tier seven or turn back now.
Track rain in Kanchanaburi — free
Upgrade to Essential for alerts, forecasts, and full radar history
