Climate and monthly weather forecastSurat Thani, Thailand
Climate and monthly weather forecast
The climate of Surat Thani
Situated in the tropical region, Surat Thani's weather is associated with the Am Köppen climate classification, commonly referred to as the Tropical Monsoon climate. The geographical positioning exposes this region to high humidity levels and significant rainfall throughout the year.A study of the climate data reveals consistent temperatures throughout the year, with the monthly average high temperatures varying from 29.9°C (85.8°F) in December to 35°C (95°F) in April. Monthly average low temperatures also display a similar consistency, with the lowest being 21.1°C (70°F) in January and February and the highest being 23.8°C (74.8°F) in May. Temperature patterns depict a tropical climate where there are no significant changes and the heat remains high year-round.
Humidity displays a relatively stable trend throughout the year, with the average relative humidity ranging from 75% in March to an extreme of 87% in October and November. This level of humidity is aligned with Surat Thani's tropical climate nature where humidity is expected to be high.
Rainfall and its frequency are substantial points of interest in Surat Thani. The amount of rainfall varies greatly from one month to another. March records the least amount of rainfall with 12mm (0.47"), whereas November experiences heavy downpours with rainfall measuring up to 330mm (12.99"). The number of rainfall days is highest from May to October ranging from 17 to 20 days, indicating a seasonal monsoon pattern.
The best time to visit Surat Thani
The ideal time to visit Surat Thani would be between February and April. This period experiences lesser rainfall, with rainfall measurements lying between 12mm (0.47") in February and 73mm (2.87") in April. The weather is also considerably warm with the highest average temperature reading at 35°C (95°F) in April. Humidity is slightly lower during these months, making it a more comfortable time for visitors. Additionally, daylight hours are longer, averaging 12.1 to 12.3 hours, providing ample sunlight for outdoor activities.The worst time to visit Surat Thani
Visiting Surat Thani between October and November might be challenging due to heavy rainfall. Rainfall amount peaks from 236mm (9.29") in October to a staggering 330mm (12.99") in November. This period also records the highest number of rainfall days and high humidity levels of 87%. It is also noteworthy to mention that the UV index is still high at 11 in October, which can be harmful if adequate precautions are not taken.Spring weather in Surat Thani
Surat Thani in the spring experiences a gradual increase in temperatures. From March to May, temperatures climb from an average high of 34.2°C (93.6°F) to 35°C (95°F), while the average low temperature increases from 21.9°C (71.4°F) to 23.8°C (74.8°F). Rainfall also rises from 24mm (0.94") in March to 178mm (7.01") in May, indicating the arrival of the monsoon season. The relative humidity level remains fairly stable from 75% to 82%.Summer weather in Surat Thani
The summer, from June to August, is characterized by a consistency in temperatures, with the average high temperatures hovering around from 34°C (93.2°F) to 32.7°C (90.9°F). Likewise, the average low temperatures remain steady from 23.7°C (74.7°F) to 23.4°C (74.1°F). While the rainfall increases gradually from June's 125mm (4.92") to August's 140mm (5.51"), all three months record around 18 days of rainfall, indicating a wet summer.Autumn weather in Surat Thani
During autumn from September to November, the temperature starts reducing slowly, with the average high temperature dropping from 32.4°C (90.3°F) to 30.3°C (86.5°F) and the average low temperature from 23.2°C (73.8°F) to 22.9°C (73.2°F). It's the wettest season, with rainfall totals shooting from 188mm (7.4") in September to a year-high of 330mm (12.99") in November.Winter weather in Surat Thani
Winter in Surat Thani witnesses a continuation of the temperature drop started in the autumn. December records the lowest average high temperature of 29.9°C (85.8°F) and the average low of 22°C (71.6°F). Rainfall reduces significantly to 129mm (5.08") and the number of rainfall days falls to 13, offering relatively drier conditions compared to the other seasons.Weather in January
The new year brings warm temperatures to Surat Thani, Thailand, characteristic of its tropical climate. Despite this warmth, January is not the hottest month of the year. Visitors and locals can still enjoy plenty of daylight, though rainfall becomes a regular occurrence. Weather in January »Weather in February
Moving into February, Surat Thani experiences a slight reduction in relative humidity. The weather is a blend of warmth, sun, and light rain showers, quite similar to January. Particularly, UV levels begin to increase, commanding attention to sun protection measures. Weather in February »Weather in March
By March, Surat Thani has entered its genuinely hot season. Cooling showers become a bit more frequent than in the previous month, but the warm trend of February continues. Noticeably, the sea temperature rises to 29°C (84.2°F), providing warm waters for swimming. Weather in March »Weather in April
April in Surat Thani means entering the peak of the hot season, characterized by high temperatures and increased precipitation. As the month progresses, heavier bouts of rain can be expected, packaged with soaring UV index. With a leap in the average rainfall to 73mm (2.87") over seven days compared to 24mm (0.94") in March, this month marks the commencement of the wetter part of the year. Weather in April »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. Weather in May »Weather in June
In June, Surat Thani continues to navigate through its monsoon period. It's a month where the balance of sunshine, high temperatures, and rainfall forms a typical tropical atmosphere. Rainfall measurements maintain their monsoon peek, yet are slightly lesser than the preceding month. Weather in June »Weather in July
July in Surat Thani is characterized by an equilibrium of rainfall and warmth. Following the late summer trend, rain showers persist, yet June and July share a similar rainfall pattern. The continuance of the wet monsoon season does not bring a drastic change in temperature. Weather in July »Weather in August
August is a month where Surat Thani experiences a continuation of the rain-soaked monsoon season. Despite the weather remaining relatively the same as July, this month has its minor fluctuations. A slight increase in rainfall coincides with the drop in sea temperature, which remains steady at 29°C (84.2°F). Weather in August »Weather in September
September brings the highest rainfall of the year to Surat Thani, with average precipitation of 188mm (7.4") over 19 days. This high rainfall makes this month the wettest period of the year. Yet, these weather conditions don't bring drastic changes to the city's temperatures, which hover at a warm range. Weather in September »Weather in October
In October, Surat Thani experiences a slight fall in temperature from September, though the weather remains largely similar. The city starts to enter a transitional phase from the monsoon season, with rainfall beginning to decline. Weather in October »Weather in November
November in Surat Thani is a significant month transition-wise, marking discernible changes in weather conditions. Rainfall dramatically drops from October, moving away from the monsoon pattern. Nonetheless, the city remains the recipient of generous showers, keeping the humidity levels high. Weather in November »Weather in December
Surat Thani in December greets a higher reduction in rainfall from November, offering a relative respite from the wet season. This downward shift in precipitation is accompanied by a mild drop in temperatures, providing a welcome change. Weather in December »Updated: Feb 5, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Surat Thani, during the entire year, the rain falls for 159 days and collects up to 1622mm (63.86") of precipitation.
January, February and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater in Surat Thani, Thailand.
February is the month with the least rainfall in Surat Thani. Rain falls for 2 days and accumulates 12mm (0.47") of precipitation.
February and March, with an average of 9h of sunshine, are months with the most sunshine in Surat Thani.
The months with the highest UV index in Surat Thani, Thailand, are February through October, with an average maximum UV index of 12.
The least humid month is March, with an average relative humidity of 75%.
April, characterized by an average high temperature of 35°C (95°F) and a low temperature of 23.4°C (74.1°F), is generally the warmest month in Surat Thani.
The months with the warmest seawater are April through June, with an average sea temperature of 30°C (86°F).
June has the longest days of the year, with an average of 12h and 36min of daylight.
October and November, with an average relative humidity of 87%, are most humid months in Surat Thani.
November is the month with the most rainfall in Surat Thani. Rain falls for 19 days and accumulates 330mm (12.99") of precipitation.
With an average of 5h of sunshine, November has the least sunshine of the year in Surat Thani.
December is the coldest month, exhibiting average temperatures of 29.9°C (85.8°F) at the peak and 22°C (71.6°F) at the base.
The month with the shortest days is December, with an average of 11h and 36min of daylight.
Surat Thani does not observe Daylight Saving Time (DST). +07 timezone is used throughout the entire year.
With an average maximum UV index of 10, December is the month with the lowest UV index in Surat Thani, Thailand.
Average temperature
Surat Thani, Thailand
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).
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
Surat Thani, Thailand
The months with the highest relative humidity are October and November (87%).
The month with the lowest relative humidity is March (75%).
Average rainfall
Surat Thani, Thailand
- Average rainfall in January:
36.8mm - Average rainfall in February:
12.3mm - Average rainfall in March:
24mm - Average rainfall in April:
73.4mm - Average rainfall in May:
178mm - Average rainfall in June:
125mm
- Average rainfall in July:
148.8mm - Average rainfall in August:
139.6mm - Average rainfall in September:
188.4mm - Average rainfall in October:
236.4mm - Average rainfall in November:
329.9mm - Average rainfall in December:
129.4mm
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
Surat Thani, Thailand
- Average rainfall days in January:
6 days - Average rainfall days in February:
2 days - Average rainfall days in March:
3 days - Average rainfall days in April:
7 days - Average rainfall days in May:
18 days - Average rainfall days in June:
17 days
- Average rainfall days in July:
17 days - Average rainfall days in August:
18 days - Average rainfall days in September:
19 days - Average rainfall days in October:
20 days - Average rainfall days in November:
19 days - Average rainfall days in December:
13 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
Surat Thani, Thailand
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 / Average sunshine
Surat Thani, Thailand
- Average daylight in January:
11h and 42min - Average daylight in February:
11h and 48min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 18min - Average daylight in May:
12h and 30min - Average daylight in June:
12h and 36min
- Average daylight in July:
12h and 36min - Average daylight in August:
12h and 24min - Average daylight in September:
12h and 12min - Average daylight in October:
11h and 54min - Average daylight in November:
11h and 42min - Average daylight in December:
11h and 36min
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).
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
Surat Thani, Thailand
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).
