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Railey Weather in May
During May, Railey experiences very high daytime temperatures of 31°C (88°F) and cooler nights around 27°C (81°F). May sits within the rainy season, so expect regular and often heavy rainfall.
Rainfall in Railey in May
Railey is in the rainy season in May, with rain on around 21 days and an average of 267 mm (11 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.
Temperature in Railey in May
Temperatures in Railey in May top out at 31°C (88°F) and drop to 27°C (81°F) overnight. Sunshine and humidity can make it feel even warmer than the raw temperature suggests. At 27°C (81°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.
Sunshine in Railey in May
You can expect a moderate amount of sunlight, with approximately 156 hours. Even though this month is part of the wet season, you can still see the sun occasionally.If you're looking for dry conditions and comfortable temperatures, May may not be the ideal month to visit Railey. Our weather planner can help you explore destinations with more pleasant weather conditions.
Railey Temperature in May
Min Temperature
27°C (81°F)
Max Temperature
31°C (88°F)
Chance of Rain
69%
Precipitation
267 mm (11 in)
Rainy days
21 days
Humidity
86%
Sunshine
156 hours
Percentage Sunshine
Railey Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Railey - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Railey typically stay consistent throughout May, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather records for Railey in May
Browse day-by-day weather records for Railey spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Railey historical weather extremes in May
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Railey.
- On May 11, 1998, temperatures climbed to 40°C (104°F), marking the warmest May day on record.
- Railey experienced its chilliest May day on May 29, 2022, reaching only 25°C (77°F).
- The coldest night in May in Railey was on May 1, 1994, with a minimum of 20°C (68°F).
Best Places in Thailand in May
Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Railey in May
Warm but pleasant conditions in Railey in May. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Railey in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping7/10 -
Outdoor sports7/10
Railey 3-Day Forecast
More climate data for Railey
Temperature Rainfall Sunshine Humidity
See the full Railey climate overview or explore weather in Thailand.
Popular in May
Where to go in May - average daytime high across popular destinations.
Bangkok
36°C (97°F) Chiang Mai
36°C (97°F) Jomtien Beach
33°C (91°F) Hua Hin33°C (91°F) Ao Nang Beach31°C (88°F) Koh Samui31°C (88°F) Ko Lanta31°C (88°F) Patong Beach30°C (86°F) Bucket list
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