★ January31° · ☂ 2 ★ February31° · ☂ 3 March 32° · ☂ 3 April 33° · ☂ 5 May 33° · ☂ 10 June 32° · ☂ 9 July 32° · ☂ 10 August 32° · ☂ 9 September 31° · ☂ 14 October 31° · ☂ 14 November 31° · ☂ 5 ★ December30° · ☂ 2 Pattaya in May:very hot, frequent rain Pattaya, Thailand · Records from 2006 to 2025. Not a forecast.
Mean high 33° Hottest day 36.2° (2016)
Mean low 27° Coldest night 21.6° (2022)
Rain days 10 days 4-18 by year
Rainfall 138mm Daylight 12.6 → 12.8 h
Pattaya's 12 months i Best: December to February
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Beach Goodwarm sea Sightseeing on foot Poorhot and muggy
Humidity 80% 31 muggy days
Clear days 1 day 22 overcast days
Mean wind 9 km/h Rarely windy
Sea temperature 30.9° 30.3-31.4° by year (last 6)
Sunrise / sunset (15th) 05:51 / 18:34 Daylight 12.6 → 12.8 h
Pattaya in May The rainy season begins. It is less wet than Bangkok, but showers increase. Heat and humidity rise together, so malls and cafes become shelters at midday.
May brought serious heat to Pattaya, 33°C on a typical afternoon and 27°C overnight. Early mornings were the best time to be outside. About 10 days a month saw rain, enough that a wet-weather plan was worth having. Year to year it swung widely, from 4 rain days in 2010 to 18 in 2025.
With 29 days above 30°C on average, most of the month felt like high summer.
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
May 1 Saturday 1 rain in 9 of 20 yrs 9/20 33° 26° May 1 rain on 45% of days 33° 26°
May 2 Sunday 2 rain in 5 of 20 yrs 5/20 33° 27° May 3 Monday 3 rain in 3 of 20 yrs 3/20 33° 27° May 4 Tuesday 4 rain in 5 of 20 yrs 5/20 33° 26° May 5 Wednesday 5 rain in 4 of 20 yrs 4/20 33° 26° May 6 Thursday 6 rain in 5 of 20 yrs 5/20 33° 27° May 7 Friday 7 rain in 7 of 20 yrs 7/20 33° 26° May 8 Saturday 8 rain in 5 of 20 yrs 5/20 33° 27° 2-8 rain on 24% of days 33° 27°
May 9 Sunday 9 rain in 4 of 20 yrs 4/20 33° 27° May 10 Monday 10 rain in 8 of 20 yrs 8/20 33° 27° May 11 Tuesday 11 rain in 7 of 20 yrs 7/20 33° 26° May 12 Wednesday 12 rain in 8 of 20 yrs 8/20 33° 26° May 13 Thursday 13 rain in 9 of 20 yrs 9/20 33° 26° May 14 Friday 14 rain in 9 of 20 yrs 9/20 32° 26° May 15 Saturday 15 rain in 6 of 20 yrs 6/20 33° 26° 9-15 rain on 36% of days 33° 26°
May 16 Sunday 16 rain in 8 of 20 yrs 8/20 33° 27° May 17 Monday 17 rain in 7 of 20 yrs 7/20 32° 27° May 18 Tuesday 18 rain in 7 of 20 yrs 7/20 32° 27° May 19 Wednesday 19 rain in 8 of 20 yrs 8/20 33° 27° May 20 Thursday 20 rain in 3 of 20 yrs 3/20 33° 27° May 21 Friday 21 rain in 5 of 20 yrs 5/20 33° 27° May 22 Saturday 22 rain in 6 of 20 yrs 6/20 33° 27° 16-22 rain on 31% of days 33° 27°
May 23 Sunday 23 rain in 4 of 20 yrs 4/20 33° 27° May 24 Monday 24 rain in 7 of 20 yrs 7/20 33° 27° May 25 Tuesday 25 rain in 8 of 20 yrs 8/20 33° 27° May 26 Wednesday 26 rain in 6 of 20 yrs 6/20 32° 27° May 27 Thursday 27 rain in 7 of 20 yrs 7/20 33° 27° May 28 Friday 28 rain in 6 of 20 yrs 6/20 33° 27° May 29 Saturday 29 rain in 5 of 20 yrs 5/20 32° 27° 23-29 rain on 31% of days 33° 27°
May 30 Sunday 30 rain in 8 of 20 yrs 8/20 32° 27° May 31 Monday 31 rain in 5 of 20 yrs 5/20 32° 27°
30-31 rain on 33% of days 32° 27°
May 1 rain on 45% of days 33° 26° 2-8 rain on 24% of days 33° 27° 9-15 rain on 36% of days 33° 26° 16-22 rain on 31% of days 33° 27° 23-29 rain on 31% of days 33° 27° 30-31 rain on 33% of days 32° 27°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
May 1 Monday 1 rain in 9 of 20 yrs 9/20 33° 26° May 2 Tuesday 2 rain in 5 of 20 yrs 5/20 33° 27° May 3 Wednesday 3 rain in 3 of 20 yrs 3/20 33° 27° May 4 Thursday 4 rain in 5 of 20 yrs 5/20 33° 26° May 5 Friday 5 rain in 4 of 20 yrs 4/20 33° 26° May 6 Saturday 6 rain in 5 of 20 yrs 5/20 33° 27° 1-6 rain on 26% of days 33° 26°
May 7 Sunday 7 rain in 7 of 20 yrs 7/20 33° 26° May 8 Monday 8 rain in 5 of 20 yrs 5/20 33° 27° May 9 Tuesday 9 rain in 4 of 20 yrs 4/20 33° 27° May 10 Wednesday 10 rain in 8 of 20 yrs 8/20 33° 27° May 11 Thursday 11 rain in 7 of 20 yrs 7/20 33° 26° May 12 Friday 12 rain in 8 of 20 yrs 8/20 33° 26° May 13 Saturday 13 rain in 9 of 20 yrs 9/20 33° 26° 7-13 rain on 34% of days 33° 27°
May 14 Sunday 14 rain in 9 of 20 yrs 9/20 32° 26° May 15 Monday 15 rain in 6 of 20 yrs 6/20 33° 26° May 16 Tuesday 16 rain in 8 of 20 yrs 8/20 33° 27° May 17 Wednesday 17 rain in 7 of 20 yrs 7/20 32° 27° May 18 Thursday 18 rain in 7 of 20 yrs 7/20 32° 27° May 19 Friday 19 rain in 8 of 20 yrs 8/20 33° 27° May 20 Saturday 20 rain in 3 of 20 yrs 3/20 33° 27° 14-20 rain on 34% of days 33° 27°
May 21 Sunday 21 rain in 5 of 20 yrs 5/20 33° 27° May 22 Monday 22 rain in 6 of 20 yrs 6/20 33° 27° May 23 Tuesday 23 rain in 4 of 20 yrs 4/20 33° 27° May 24 Wednesday 24 rain in 7 of 20 yrs 7/20 33° 27° May 25 Thursday 25 rain in 8 of 20 yrs 8/20 33° 27° May 26 Friday 26 rain in 6 of 20 yrs 6/20 32° 27° May 27 Saturday 27 rain in 7 of 20 yrs 7/20 33° 27° 21-27 rain on 31% of days 33° 27°
May 28 Sunday 28 rain in 6 of 20 yrs 6/20 33° 27° May 29 Monday 29 rain in 5 of 20 yrs 5/20 32° 27° May 30 Tuesday 30 rain in 8 of 20 yrs 8/20 32° 27° May 31 Wednesday 31 rain in 5 of 20 yrs 5/20 32° 27°
28-31 rain on 30% of days 32° 27°
1-6 rain on 26% of days 33° 26° 7-13 rain on 34% of days 33° 27° 14-20 rain on 34% of days 33° 27° 21-27 rain on 31% of days 33° 27° 28-31 rain on 30% of days 32° 27°
Tap another date to change
2006 none
2007 35mm
2008 14mm
2009 14mm
2010 9mm
2011 none
2012 none
2013 none
2014 none
2015 none
2016 none
2017 none
2018 9mm
2019 none
2020 none
2021 3mm
2022 8mm
2023 5mm
2024 none
2025 9mm
Holidays in May (2027) May 1 to May 4 Labour Day and Coronation Day breakMay 3 Substitute for National Labour Day (1 May)May 20 Visakha Bucha DayMay 31 Memorial Day 1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)
Your trip dates, the past 20 years Trip dates May 1 (Sat) 2 (Sun) 3 (Mon) 4 (Tue) 5 (Wed) 6 (Thu) 7 (Fri) 8 (Sat) 9 (Sun) 10 (Mon) 11 (Tue) 12 (Wed) 13 (Thu) 14 (Fri) 15 (Sat) 16 (Sun) 17 (Mon) 18 (Tue) 19 (Wed) 20 (Thu) 21 (Fri) 22 (Sat) 23 (Sun) 24 (Mon) 25 (Tue) 26 (Wed) 27 (Thu) 28 (Fri) 29 (Sat) 30 (Sun) 31 (Mon) ~ May 1 (Sat) 2 (Sun) 3 (Mon) 4 (Tue) 5 (Wed) 6 (Thu) 7 (Fri) 8 (Sat) 9 (Sun) 10 (Mon) 11 (Tue) 12 (Wed) 13 (Thu) 14 (Fri) 15 (Sat) 16 (Sun) 17 (Mon) 18 (Tue) 19 (Wed) 20 (Thu) 21 (Fri) 22 (Sat) 23 (Sun) 24 (Mon) 25 (Tue) 26 (Wed) 27 (Thu) 28 (Fri) 29 (Sat) 30 (Sun) 31 (Mon) 1-7 8-14 15-21 22-end Whole month
You can also click two dates on the axis. Hover a cell to see that day's rain. By year Driest trips first
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Trip rain days Month rain days Tap a date to start, tap another to end. Each cell is that date in one year. '06 '07 '08 '09 '10 '11 '12 '13 '14 '15 '16 '17 '18 '19 '20 '21 '22 '23 '24 '25
of 20 Dates outside your trip are dimmed.
One row per year, one cell per day. 2010 had 4 rain days, 2025 had 18.
Pattaya through the year Month High Low Rain days Rainfall Sea January Good 31° 23° 2 days 19mm 27° February Good 31° 25° 3 days 37mm 28° March 32° 26° 3 days 38mm 29° April 33° 27° 5 days 73mm 31° May 33° 27° 10 days 138mm 31° June 32° 27° 9 days 119mm 30° July 32° 26° 10 days 106mm 30° August 32° 26° 9 days 93mm 30° September 31° 25° 14 days 232mm 30° October 31° 25° 14 days 231mm 30° November 31° 24° 5 days 77mm 29° December Good 30° 23° 2 days 13mm 28°
What to pack Loose linen or quick-dry cotton, a wide-brimmed hat and sunscreen were the basics. A water bottle stayed in the bag, and midday plans moved indoors.
Rainy days were mixed in often enough that shoes you cannot get wet are a bad bet.
Common questions Does it rain a lot in Pattaya in May? Over the past 20 years May averaged 10 rain days (1 mm or more) out of 31. Individual years ran from 4 in the driest to 18 in the wettest.
What should I wear in Pattaya in May? Days averaged 33°C and nights 27°C. Pack a compact umbrella, T-shirts, sunscreen plus a hat, a swimsuit, and insect repellent.
Can you swim in Pattaya in May? Sea surface temperature averaged 30.9°C in May, warm enough to stay in for a long swim. Year to year it ranged 30.3-31.4°C. Check local flags for waves and jellyfish on the day.
Is May a good time to visit Pattaya? On warmth and rain days alone, Pattaya's easiest months were December to February. May ranked 10 of 12.
Is Pattaya humid in May? Mean relative humidity was 80%, with about 31 muggy days (dew point of 20°C or more) in the month.
Previous month Pattaya in April Next month Pattaya in June Whole year Pattaya weather by month Where to go May By country Thailand: all cities this month Compare Compare with Phuket