Live Rain Radar for Khon Kaen
Track rain and storms across Khon Kaen and the central Isan plateau. Updates every 5 minutes.
Local Weather Context
Khon Kaen is the commercial and educational centre of central Isan, located on the Khorat Plateau at around 170 m elevation. The Chi River passes through the province, and its flat landscape makes it prone to widespread flooding when heavy rain saturates the clay-rich soil. As Isan’s largest city, weather disruptions impact a population of over 400,000.
Seasons
Wet season (May–October)
The south-west monsoon brings 80% of the annual rainfall. July–September are the wettest months, with averages of 200–270 mm. Afternoon convective storms are frequent, sometimes developing into severe thunderstorms with hail over the open plateau.
Transition months (November, April)
November brings cooler temperatures and the last of the rain. April is the hottest month — temperatures regularly exceed 38°C with occasional severe pre-monsoon thunderstorms.
Dry season (December–March)
Cool, dry conditions with less than 20 mm of rain per month. The Chi River drops to low levels, and water management becomes critical. January temperatures can fall below 10°C on clear nights.
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
University community
Khon Kaen University, the largest campus in northeast Thailand, has over 40,000 students. Most travel by motorbike, so real-time rain tracking is vital for daily commutes.
Sugar cane farmers
Khon Kaen province is Thailand’s leading sugar cane producer. Rain during the harvest season (December–April) can damage cut cane and make field access impossible for lorries.
Silk weavers
Traditional mudmee silk production involves outdoor dyeing and drying processes that must be safeguarded from unexpected rain.
Logistics operators
As Isan’s transport hub, Khon Kaen’s highways and railway links require weather monitoring. Heavy rain disrupts the logistics chain supplying Bangkok’s markets.
Radar Coverage
RainViewer offers excellent coverage across Khon Kaen and the surrounding plateau. The flat terrain means minimal radar obstruction — storm cells can be seen from long distances. Coverage stretches to Udon Thani in the north, Maha Sarakham to the east, and Chaiyaphum to the southwest.
What Our Users Say
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“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.
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FAQ
Why are Isan thunderstorms sometimes severe?
The flat, open plateau allows storm cells to develop and intensify without topographical interference. Combined with strong daytime heating, this can result in occasionally severe storms with hail, strong winds, and heavy rain.
Can radar detect hail-producing storms?
Very intense radar echoes (displayed in bright red or purple) often indicate hail. If you see these colours approaching on the radar, seek shelter immediately.
How does radar help during sugar cane harvest?
Farmers and mill operators check the radar to plan cutting and transport schedules. Rain-free windows of 6+ hours are required for efficient harvesting and field truck access.
See rain in Khon Kaen before it reaches your field or your route
Rain in Khon Kaen moves quickly across the plateau, is highly localised, and is exactly the sort of storm a 7-day forecast completely misses. The map updates every 5 minutes — often 2–5 minutes faster than other apps — so by the time a cell is forming south of the city, you already know whether it’s heading towards your fields or along the Highway 2 corridor.
Rain Viewer Essential gives you:
- A 2-hour rain forecast in 5-minute steps — not hourly blocks, so you can pinpoint the exact window when the afternoon storm clears and the harvest crew or convoy can move
- Rain alerts that trigger before the rain arrives — set your farm in the eastern districts, the Kaen Nakhon lakeside, or your Highway 2 waypoint and get notified while you can still change your plans
- Direction arrows on the map — so even if the animation isn’t clear, you can see whether the cell is tracking north of the city towards Udon Thani or pushing south towards Maha Sarakham
- 48 hours of radar history — see how yesterday’s plateau storm moved across the Phong River catchment and spot the same pattern forming this afternoon
- Multiple locations — track rain at your cassava fields, the Khon Kaen hospital approach road, and your Bangkok-bound freight route all at once
A 7-day forecast tells you August will be wet. Rain Viewer tells you whether to send the cutting crew in now or wait for two hours.
Track rain in Khon Kaen — free
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