The hottest month in Phan Thiet is May when the average maximum temperature is 36°, average temperature is 31° and average minimum temperature is 27°.
The coolest month in Phan Thiet is January when the average maximum temperature is 28°, average temperature is 24° and average minimum temperature is 21°.
The longest days in Phan Thiet are in June, with an average of 12.8 hours of daylight per day. January has the shortest days with an average of 11.5 hours of daylight per day.
The sunniest days in Phan Thiet are in April which has the most hours of sunshine per day with an average of 7.4 hours of sunshine per day, making it a quite sunny month with some cloud cover. January has the least sunshine with an average of 5.7 hours of sunshine per day, making it a sunny month that is overcast at times.
The ultraviolet index is the highest in April when it reaches 14.8 and lowest in December when it reaches 10.3.
An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.
The warmest sea water temperatures in Phan Thiet are found in July when they peak at 29° and lowest in January when they dip to 25°.
The sea is best for swimming between April and December when the temperature is above 27° which is very warm and ideal for relaxing and swimming for the whole day.
The wettest month in Phan Thiet is July with 4.1cm of rain and November has the most days of rain with 16.5 days with some rain, a wet time to visit the beach.
The driest month in Phan Thiet is January with 0cm of rain and February has the fewest days of rain with 0.6 days with some rain, an extremely dry time to visit the beach.
The most humid month in Phan Thiet is May with a dew point (an indicator of humidity) of 27° which is extremely humid and uncomfortable unless you are on a beach. At night you would most likely require airconditioning.
The least humid month in Phan Thiet is January with a dew point of 20° which is somewhat uncomfortable for most people in cities but fine on a beach.
The most windy month in Phan Thiet is August when the average maximum windspeed is 32kmh and the average wind speed is 9kmh.
The least windy month in Phan Thiet is April when the average maximum windspeed is 23kmh and the average wind speed is 8kmh.