This isn't a shortlist. It's a weekend read on Koh Samui when the outlook sits near 85°F.
What's the weekend looking like in Koh Samui?
Why this weekend
The useful question is simple: does the outlook in Koh Samui support the weekend you want?
Koh Samui, Surat Thani
Koh Samui, Surat Thani is looking at a 85°F high and 76°F low this weekend, with a workable rain total around 0.38 in.
Treat Koh Samui as the whole trip: build the day around warm shore air and lighter rain, then fill gaps with the local picks below.
Bottom line: go to Koh Samui if this forecast matches the weekend you want; skip it if it doesn’t.
Things to do
Tarnim Magic GardenBefore you leave
Before you leave2
- Daytime highs near 85°F — prioritize sun protection, breathable clothes, and water.
- Strong sun is likely this week — SPF 30+ (SPF 50+ if you burn easily) is recommended.
Before you leave6
- Check the destination weather window
- Download airline app
- Download offline maps
- Get some local currency or notify your bank
- Confirm reservations (hotel, cars, tours)
- Review airline baggage rules
FAQ — trip planning around weather
What's the weekend looking like in Koh Samui?
Koh Samui is looking at about 85°F with 0.38" rain on the weekend outlook — use that as the planning anchor, then build the itinerary around the local picks above.
How can I plan a trip based on weather?
Start with the forecast you want, shortlist places that match, then build the itinerary. That’s what YouGee does interactively — this guide is a snapshot of one decision.
What are the best vacation planning websites for weather?
Most sites start with a destination. These guides start with the weather you want, then show places that fit. See about these guides.
Keep planning
Updated August 31, 2026. Not a substitute for local advisories.