The hottest month in Vina del Mar is January when the average maximum temperature is 23°, average temperature is 19° and average minimum temperature is 15°.
The coolest month in Vina del Mar is July when the average maximum temperature is 14°, average temperature is 11° and average minimum temperature is 8°.
The longest days in Vina del Mar are in December, with an average of 14.3 hours of daylight per day. June has the shortest days with an average of 10 hours of daylight per day.
The sunniest days in Vina del Mar are in January which has the most hours of sunshine per day with an average of 10.7 hours of sunshine per day, making it a very sunny and pleasant month with long bright days. June has the least sunshine with an average of 3.5 hours of sunshine per day, making it not a particularly sunny month.
The ultraviolet index is the highest in January when it reaches 15.8 and lowest in June when it reaches 4.4.
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 Vina del Mar are found in January when they peak at 18° and lowest in August when they dip to 10°.
The sea is best for swimming between November and April when the temperature is above 14° which is cold for swimming, a full wet suit is required to spend any length of time in the sea.
The most humid month in Vina del Mar is January with a dew point (an indicator of humidity) of 14° which is comfortable for everyone.
The least humid month in Vina del Mar is July with a dew point of 8° which is a bit dry for some.
The most windy month in Vina del Mar is January when the average maximum windspeed is 26kmh and the average wind speed is 15kmh.
The least windy month in Vina del Mar is May when the average maximum windspeed is 19kmh and the average wind speed is 10kmh.