The hottest month in Guerrero is August when the average maximum temperature is 33°, average temperature is 28° and average minimum temperature is 25°.
The coolest month in Guerrero is January when the average maximum temperature is 27°, average temperature is 22° and average minimum temperature is 18°.
The longest days in Guerrero are in June, with an average of 13.4 hours of daylight per day. December has the shortest days with an average of 10.9 hours of daylight per day.
The sunniest days in Guerrero are in February which has the most hours of sunshine per day with an average of 7.2 hours of sunshine per day, making it a quite sunny month with some cloud cover. September has the least sunshine with an average of 5.8 hours of sunshine per day, making it a sunny month that is overcast at times.
The ultraviolet index is the highest in May when it reaches 13.5 and lowest in December when it reaches 7.
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 Guerrero are found in September when they peak at 29° and lowest in February when they dip to 26°.
The sea is best for swimming between May 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 Guerrero is September with 114cm of rain and the most days of rain with 12.5 days with some rain, a very wet time to visit the beach.
The driest month in Guerrero is April with 13.3cm of rain and the least days of rain with 1.9 days with some rain, a dry time to visit the beach.
The most humid month in Guerrero is August with a dew point (an indicator of humidity) of 25° which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning.
The least humid month in Guerrero 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 Guerrero is April when the average maximum windspeed is 27kmh and the average wind speed is 12kmh.
The least windy month in Guerrero is November when the average maximum windspeed is 22kmh and the average wind speed is 10kmh.
