January weather forecast
Pattaya, Thailand

The Sanctuary of Truth Temple in Pattaya, Thailand, in the middle of a lovely natural park garden
The Sanctuary of Truth Temple in Pattaya, Thailand, in the middle of a lovely natural park garden

Weather in January

January, like December, is another tropical winter month in Pattaya, Thailand, with an average temperature ranging between min 23°C (73.4°F) and max 30.6°C (87.1°F).
An excellent water temperature of 27.2°C (81°F) and only 1 rainfall days, with 15.6mm (0.61") of accumulated rainfall, makes January a prime for swimming and other water activities.

Temperature

In January, the average high-temperature in Pattaya, Thailand, is essentially the same as in December - a still hot 30.6°C (87.1°F). In January, in Pattaya, the average low-temperature is 23°C (73.4°F).

Heat index

The average heat index in January is computed to be a sweltering 37.4°C (99.3°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, wind, metabolic differences). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In January, the average relative humidity in Pattaya, Thailand, is 73%.

Rainfall

In Pattaya, during January, the rain falls for 1 days and regularly aggregates up to 15.6mm (0.61") of precipitation. Throughout the year, in Pattaya, there are 106 rainfall days, and 1110.7mm (43.73") of precipitation is accumulated.

Sea temperature

With an average sea temperature of 27.2°C (81°F), January is the month with the coldest seawater in Pattaya.
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Pattaya, the average length of the day in January is 11h and 28min.
On the first day of the month, sunrise is at 06:38 and sunset at 18:01. On the last day of January, in Pattaya, sunrise is at 06:42 and sunset at 18:17 +07.

Sunshine

The months with the most sunshine in Pattaya are January through April and December, with an average of 8h of sunshine.

UV index

In Pattaya, the average daily maximum UV index in January is 10. A UV Index estimate of 8 to 10 represents a very high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The average daily UV index of 10 in January transform into the following instructions:
Take special precautions, as unprotected skin can be damaged and can burn quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in January in Pattaya?

In Pattaya, Thailand, in January, the average high-temperature is 30.6°C (87.1°F), and the average low-temperature is 23°C (73.4°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in January is computed to be 37.4°C (99.3°F).

What is the average humidity in January in Pattaya?

In January, the average relative humidity in Pattaya is 73%.

How many days does it rain in January in Pattaya?

In Pattaya, Thailand, during January, the rain falls for 1 days and regularly aggregates up to 15.6mm (0.61") of precipitation.

When is the sea coldest in Pattaya?

January is the month with the coldest seawater in Pattaya, with an average sea temperature of 27.2°C (81°F).

How warm is the water in January in Pattaya?

In Pattaya, Thailand, in January, the average water temperature is 27.2°C (81°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Pattaya have in January?

The average day length in January in Pattaya, Thailand, is 11h and 28min.

When are sunrise and sunset in January in Pattaya?

In January, on the first day of the month, sunrise is at 06:38 and sunset at 18:01. On the last day of the month, in Pattaya, Thailand, sunrise is at 06:42 and sunset at 18:17 +07.

What is the month with the most sunshine in Pattaya?

The months with the most sunshine in Pattaya are January through April and December, with an average of 8h of sunshine.

How many hours of sunshine does Pattaya have in January?

In Pattaya, Thailand, the average sunshine duration in January is 8h.

How high is the UV index in January in Pattaya?

The average daily maximum UV index in January is 10. A UV Index of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average UV index

Average temperature in January
Pattaya, Thailand

Average temperature in January - Pattaya, Thailand
  • Average high temperature in January: 30.6°C

The warmest month (with the highest average high temperature) is April (32.9°C).
The month with the lowest average high temperature is December (30°C).

  • Average low temperature in January: 23°C

The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is December (22.5°C).

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Average humidity in January
Pattaya, Thailand

Average humidity in January - Pattaya, Thailand
  • Average humidity in January: 73%

The month with the highest relative humidity is October (83%).
The month with the lowest relative humidity is December (70%).

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Average rainfall in January
Pattaya, Thailand

Average rainfall in January - Pattaya, Thailand
  • Average rainfall in January: 15.6mm

The wettest month (with the highest rainfall) is October (216.1mm).
The driest month (with the least rainfall) is December (8.3mm).

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Average rainfall days in January
Pattaya, Thailand

Average rainfall days in January - Pattaya, Thailand
  • Average rainfall days in January: 1 days

The month with the highest number of rainy days is October (18 days).
The months with the least rainy days are January and December (1 days).

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Average sea temperature in January
Pattaya, Thailand

Average sea temperature in January - Pattaya, Thailand
  • Average sea temperature in January: 27.2°C

The best month for swimming (with the highest average sea temperature) is May (30°C).
The coldest month (with the lowest average sea temperature) is January (27.2°C).

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Average daylight in January /
Average sunshine in January
Pattaya, Thailand

Average daylight in January / Average sunshine in January - Pattaya, Thailand
  • Average daylight in January: 11h and 28min

The month with the longest days is June (Average daylight: 12h and 52min).
The month with the shortest days is December (Average daylight: 11h and 23min).

  • Average sunshine in January: 8h

The months with the most sunshine are January, February, March, April and December (Average sunshine: 8h).
The months with the least sunshine are June, July, August and September (Average sunshine: 5h).

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Average UV index in January
Pattaya, Thailand

Average UV index in January - Pattaya, Thailand
  • Average UV index in January: 10

The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).

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