May weather forecast
Portsmouth, Dominica

May in Portsmouth is characterized by a noticeable increase in rainfall, with average precipitation amounts rising to 177mm. High temperatures beckon beach-goers as the sea's warmth hits its peak. Daylight hours extend, illuminating the city longer and offering extended periods for exploring. A shift from warmer climates to wetter ones usually takes place during this month. Preceding the official hurricane season, May acts as somewhat of a prelude.

Temperature

The beginning of May records an average high-temperature of a still hot 30°C, marking a negligible difference from April's tropical 30°C. In Portsmouth, May nights witness a steady temperature drop to a moderately hot 23°C.

Rainfall

In Portsmouth, in May, during 17 rainfall days, 177mm of precipitation is typically accumulated. In Portsmouth, during the entire year, the rain falls for 214 days and collects up to 2252mm of precipitation.

Sea temperature

In Portsmouth, Dominica, the average seawater temperature in May is 28°C.
Note: For swimming, diving, and other water activities, temperatures between 25°C and 29°C are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In May, the average length of the day in Portsmouth is 12h and 52min.
On the first day of the month, sunrise is at 05:42 and sunset at 18:23. On the last day of May, in Portsmouth, sunrise is at 05:33 and sunset at 18:33 AST.

Sunshine

March through August, with an average of 8h of sunshine, are months with the most sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Portsmouth. A UV Index estimate of 11, and higher, represents an excessive health risk from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 12 in May interprets into the following advice:
Practice every essential safety step. People with fair skin could receive burns in fewer than 5 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Post an outdoor workout or swimming, a broad-spectrum SPF 30+ sunscreen should be applied generously and frequently. Be alert! The reflection of water and sand augments UV radiation intensity.