April weather forecast
Hua Hin, Thailand

April, like March, is another tropical spring month in Hua Hin, Thailand, with an average temperature ranging between max 33.6°C (92.5°F) and min 25.8°C (78.4°F).

Temperature

April and May, with an average high-temperature of 33.6°C (92.5°F), are the warmest months.

Heat index

The average heat index in April is computed to be a blazing hot 47°C (116.6°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged 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 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, pregnancy, differences in body mass, height, and shape). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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 cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. 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 April, the average relative humidity is 73%.

Rainfall

In Hua Hin, during April, the rain falls for 4 days and regularly aggregates up to 46mm (1.81") of precipitation. In Hua Hin, during the entire year, the rain falls for 118 days and collects up to 955mm (37.6") of precipitation.

Sea temperature

April through June, with an average sea temperature of 30°C (86°F), are months with the warmest seawater.
Note: For swimming, other intense water activities, temperature above 30°C (86°F) is arguably unpleasant, as the water cooling effect is missing.

Daylight

In Hua Hin, the average length of the day in April is 12h and 25min.
On the first day of April, sunrise is at 06:16 and sunset at 18:31. On the last day of the month, sunrise is at 06:00 and sunset at 18:34 +07.

Sunshine

In April, the average sunshine in Hua Hin is 8h.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 12 in April interpret into the following advice:
Take all required precautions, as unprotected skin and eyes can burn in minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.