May weather forecast
Surat Thani, Thailand

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Weather in May

May weather in Surat Thani steps up the rainfall steadily from April, shifting towards the monsoon. This month does not hold back on delivering tropical showers, with rainfall reaching a substantial average of 178mm (7.01"). Though the rainfall increases significantly, the temperatures do not drastically drop, keeping the tropical ambience intact. Despite the high humidity, sea temperatures and daylight hours remain consistent, offering a balanced mix of weather elements.

Temperature

May brings a marginal elevation to a hot 34°C (93.2°F) from April's 35°C (95°F) in Surat Thani's average high-temperatures. During the month of May, Surat Thani experiences a steady low-temperature average of 23.8°C (74.8°F).

Heat index

In May, the average heat index is computed to be a blazing hot 53°C (127.4°F). Stay on guard: Heat exhaustion and heat cramps are predicted. Ongoing effort can cause heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are extremely vital to babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In May, the average relative humidity is 82%.

Rainfall

In May, in Surat Thani, the rain falls for 18 days. Throughout May, 178mm (7.01") of precipitation is accumulated. Throughout the year, there are 159 rainfall days, and 1622mm (63.86") of precipitation is accumulated.

Sea temperature

April through June, with an average sea temperature of 30°C (86°F), are months with the warmest seawater in Surat Thani.
Note: It is often perceived that water temperatures beyond 30°C (86°F) lack the cooling effect desired during hot weather.

Daylight

In May, the average length of the day in Surat Thani is 12h and 32min.
On the first day of May, sunrise is at 06:06 and sunset at 18:33. On the last day of the month, sunrise is at 06:01 and sunset at 18:39 +07.

Sunshine

In May, the average sunshine in Surat Thani is 6h.

UV index

The months with the highest UV index in Surat Thani are February through October, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 12 during May leads to these advisories:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Stay sun-safe with clothing that is both closely woven and worn loosely. Even if the day is cloudy, sunscreen with SPF of at least 30 should be applied generously and reapplied often, particularly after swimming or outdoor exercise. Notice! The reflection of water and sand increases the UV radiation significantly.

Frequently asked questions

How hot is it in Surat Thani in May?

The average high-temperature and low-temperature during May are 34°C (93.2°F) and 23.8°C (74.8°F) respectively. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in May is computed to be 53°C (127.4°F).

What is the average humidity in May in Surat Thani?

In May, the average relative humidity is 82%.

How many days does it rain in May in Surat Thani?

In Surat Thani, Thailand, during May, the rain falls for 18 days and regularly aggregates up to 178mm (7.01") of precipitation.

What are the months with the warmest sea water in Surat Thani?

April through June, with an average sea temperature of 30°C (86°F), are months with the warmest seawater in Surat Thani, Thailand.

How warm is the water in May in Surat Thani?

In Surat Thani, in May, the average water temperature is 30°C (86°F). The water temperature above 30°C (86°F) is arguably regarded as unpleasant. The primary purpose of entering the water - cooling down from sunshine and high temperatures - is lost.

How many hours of daylight does Surat Thani have in May?

The average day length in May in Surat Thani, Thailand, is 12h and 32min.

When are sunrise and sunset in May in Surat Thani?

On the first day of May in Surat Thani, sunrise is at 06:06 and sunset at 18:33. On the last day of the month, sunrise is at 06:01 and sunset at 18:39 +07.

How long on average sun shines in May in Surat Thani?

In May, the average sunshine duration is 6h.

What is the month with the highest UV index in Surat Thani?

February through October, with an average maximum UV index of 12, are months with the highest UV index in Surat Thani.

What is the UV index intensity in May in Surat Thani?

The average daily maximum UV index in May in Surat Thani is 12. A UV Index value of 11, and more, symbolizes an ultimate hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average UV index

Average temperature in May
Surat Thani, Thailand

Average temperature in May - Surat Thani, Thailand
  • Average high temperature in May: 34°C

The warmest month (with the highest average high temperature) is April (35°C).
The month with the lowest average high temperature is December (29.9°C).

  • Average low temperature in May: 23.8°C

The month with the highest average low temperature is May (23.8°C).
The coldest months (with the lowest average low temperature) are January and February (21.1°C).

Average humidity in May
Surat Thani, Thailand

Average humidity in May - Surat Thani, Thailand
  • Average humidity in May: 82%

The months with the highest relative humidity are October and November (87%).
The month with the lowest relative humidity is March (75%).

Average rainfall in May
Surat Thani, Thailand

Average rainfall in May - Surat Thani, Thailand
  • Average rainfall in May: 178mm

The wettest month (with the highest rainfall) is November (329.9mm).
The driest month (with the least rainfall) is February (12.3mm).

Average rainfall days in May
Surat Thani, Thailand

Average rainfall days in May - Surat Thani, Thailand
  • Average rainfall days in May: 18 days

The month with the highest number of rainy days is October (20 days).
The month with the least rainy days is February (2 days).

Average sea temperature in May
Surat Thani, Thailand

Average sea temperature in May - Surat Thani, Thailand
  • Average sea temperature in May: 30°C

The best months for swimming (with the highest average sea temperature) are April, May and June (30°C).
The coldest months (with the lowest average sea temperature) are January, February and December (28°C).

Average daylight in May /
Average sunshine in May
Surat Thani, Thailand

Average daylight in May / Average sunshine in May - Surat Thani, Thailand
  • Average daylight in May: 12h and 3min

The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).

  • Average sunshine in May: 6h

The months with the most sunshine are February and March (Average sunshine: 9h).
The month with the least sunshine is November (Average sunshine: 5h).

Average UV index in May
Surat Thani, Thailand

Average UV index in May - Surat Thani, Thailand
  • Average UV index in May: 12

The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).

Surat Thani, Thailand

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