May weather forecast
Florianópolis, Brazil

May marks the beginning of the cooler season for Florianópolis with temperatures, sea conditions, and daylight hours presenting considerable changes from previous months. It's interesting to note that May experiences less rainfall, receiving 97mm (3.82") over about seven days. Despite the reduction in the UV index, ample sunshine hours make for enjoyable sightseeing. The declining sea temperatures suggest a slowdown in maritime activities.

Temperature

On the advent of May, Florianópolis's average high-temperature exhibits a minor adjustment to a still moderately hot 23°C (73.4°F) from April's 25.4°C (77.7°F). In May, the temperature in Florianópolis drops to an average of 15.6°C (60.1°F) at night.

Humidity

In May, the average relative humidity in Florianópolis is 83%.

Rainfall

In Florianópolis, in May, it is raining for 7 days, with typically 97mm (3.82") of accumulated precipitation. Throughout the year, in Florianópolis, Brazil, there are 120 rainfall days, and 1518mm (59.76") of precipitation is accumulated.

Sea temperature

In Florianópolis, in May, the average water temperature is 22.3°C (72.1°F).
Note: Swimming in 22.3°C (72.1°F) can be enjoyable or not, depending on how you feel about the cold and conditions such as sunshine, wind, and the day's temperature. FYI: Olympic standards dictate waters of 25°C (77°F) to 28°C (82.4°F).

Daylight

In May, the average length of the day in Florianópolis is 10h and 45min.
On the first day of May in Florianópolis, sunrise is at 06:40 and sunset at 17:42. On the last day of the month, sunrise is at 06:56 and sunset at 17:27 -03.

Sunshine

In Florianópolis, the average sunshine in May is 6h.

UV index

In Florianópolis, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, a daily UV index of 5 turns into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Alert! Sand and water increase UV exposure due to their reflective properties.