Thailand

Thailand Weather in May

Average temperatures, rainfall, sunshine and the best places to visit in Thailand in May.

Planning a journey to Thailand this May and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in Thailand in May

May in Thailand generally has temperatures that range from very warm to very hot, with precipitation levels ranging from moderate to heavy.

Temperatures

Based on our climate data spanning from 1990-2020, the average maximum temperature is very warm in Bo Kluea at 30°C (86°F) to very hot in Nakhon Sawan at 38°C (100°F). Nighttime temperatures generally drop to 27°C (81°F) in Nakhon Sawan and 19°C (66°F) in Bo Kluea. These night and day temperatures are average and some days may be even warmer. So be prepared and dress for the heat.

For a closer look at conditions across Thailand, refer to the map below.

Precipitation

In May, precipitation varies across different areas. From moderate rainfall in Puk Tian with an average of 95 mm (3.7 in) to heavy rainfall in Ban Lao Kok Kho with 495 mm (19 in).

Average sunshine

Plenty of sunshine can be expected in numerous places in May. Bangkok typically receives 216 hours of sunlight, making it ideal for those seeking sunny weather.

Explore Thailand by month

Best Places to Visit in Thailand in May

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Thailand.

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).

Popular Destinations in Thailand

What is the weather like in May for some of the most popular destinations in Thailand?

Temperature range in Thailand (May)

Precipitation variation in Thailand (May)

Bangkok

In May Bangkok generally has extremely high temperatures with maximum daytime temperatures around 36°C (97°F), minimum nighttime temperatures around 28°C (82°F) and heavy monthly rainfall. So on average the conditions are poor that month.

May
April
May
June
Max temperature
37°C (99°F)
36°C (97°F)
35°C (95°F)
Min temperature
28°C (82°F)
28°C (82°F)
27°C (81°F)
Monthly sun hours
257 hours
216 hours
178 hours
Monthly rainfall
90 mm (3.5 in)
201 mm (7.9 in)
198 mm (7.8 in)
Monthly rainy days
6 days
14 days
15 days
Weather conditions

Chiang Mai

In May Chiang Mai generally has extremely high temperatures with maximum daytime temperatures around 36°C (97°F), minimum nighttime temperatures around 25°C (77°F) and high monthly rainfall. So on average the conditions are poor that month.

May
April
May
June
Max temperature
38°C (100°F)
36°C (97°F)
34°C (93°F)
Min temperature
24°C (75°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
280 hours
199 hours
158 hours
Monthly rainfall
32 mm (1.3 in)
117 mm (4.6 in)
148 mm (5.8 in)
Monthly rainy days
6 days
16 days
17 days
Weather conditions

Patong Beach

In May Patong Beach generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 27°C (81°F) and heavy monthly rainfall. So on average the conditions are poor that month.

May
April
May
June
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Monthly sun hours
183 hours
151 hours
150 hours
Monthly rainfall
139 mm (5.5 in)
247 mm (9.7 in)
227 mm (8.9 in)
Monthly rainy days
12 days
21 days
20 days
Weather conditions

Hua Hin

In May Hua Hin generally has very high temperatures with maximum daytime temperatures around 33°C (91°F), minimum nighttime temperatures around 27°C (81°F) and high monthly rainfall. So on average the conditions are tolerable that month.

May
April
May
June
Max temperature
34°C (93°F)
33°C (91°F)
33°C (91°F)
Min temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Monthly sun hours
240 hours
195 hours
152 hours
Monthly rainfall
64 mm (2.5 in)
105 mm (4.1 in)
79 mm (3.1 in)
Monthly rainy days
4 days
14 days
16 days
Weather conditions

Ao Nang Beach

In May Ao Nang Beach generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 27°C (81°F) and heavy monthly rainfall. So on average the conditions are poor that month.

May
April
May
June
Max temperature
32°C (90°F)
31°C (88°F)
31°C (88°F)
Min temperature
27°C (81°F)
27°C (81°F)
26°C (79°F)
Monthly sun hours
185 hours
156 hours
151 hours
Monthly rainfall
158 mm (6.2 in)
263 mm (10 in)
262 mm (10 in)
Monthly rainy days
11 days
21 days
19 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Thailand.

Popular cities in May

Day & night temperatures, rainfall and average weather in Thailand in May.

City Weather Day temp Night temp Rainfall
Bangkok 36°C (97°F) 28°C (82°F) 201 mm (7.9 in)
Chiang Mai 36°C (97°F) 25°C (77°F) 117 mm (4.6 in)
Koh Samui 31°C (88°F) 28°C (82°F) 126 mm (5 in)
Hua Hin 33°C (91°F) 27°C (81°F) 105 mm (4.1 in)
Koh Chang 31°C (88°F) 27°C (81°F) 419 mm (16 in)
Chiang Rai 34°C (93°F) 24°C (75°F) 258 mm (10 in)

Thailand weather in May: frequently asked questions

What is the weather like in Thailand in May?

In May, Thailand generally has poor weather conditions. Bangkok sees daytime temperatures near 36°C (97°F), with nights cooling to roughly 28°C (82°F).

What is the average temperature in Thailand in May?

Bangkok averages a daytime maximum of 36°C (97°F) in May, with overnight lows close to 28°C (82°F).

Does Thailand get a lot of rain in May?

Rainfall in Thailand peaks during May. Bangkok averages roughly 201 mm (7.9 in), so frequent and sometimes heavy showers are the norm.

Is May a Good Time to Visit Thailand?

In our opinion, May may not be the ideal time to visit Thailand due to the typically poor weather in Bangkok.

On average, the best time to visit Thailand is in January and December with generally tolerable weather in Bangkok. On the other hand, the months of February, March, April, May, June, July, August, September, October and November tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Thailand.

Weather and climate has detailed information for every country in the world. Are you going to Thailand? Get detailed historical weather averages for many cities in Thailand.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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