March weather forecast
Portsmouth, Dominica

In March, Portsmouth begins to see an increment in daylight hours. Conditions are optimal for sunbathing and sightseeing, given the increase in sunlight. With an average of 110mm over 15 days, rainfall decreases significantly compared to the preceding months of January and February. Endowed with a consistently high UV index, protective measures against sunburn are important. Transition from March to April brings with it slightly increased rainfall.

Temperature

Portsmouth's average high-temperature in March is on par with the preceding month. In Portsmouth, an average nighttime temperature of 21°C is expected during March.

Rainfall

In Portsmouth, Dominica, in March, it is raining for 15 days, with typically 110mm of accumulated precipitation. Throughout the year, there are 214 rainfall days, and 2252mm of precipitation is accumulated.

Sea temperature

In Portsmouth, the average seawater temperature in March is 26.9°C.
Note: For water activities like swimming, diving, and more, temperatures ranging between 25°C and 29°C offer superior comfort and enjoyment for lengthy durations.

Daylight

In Portsmouth, the average length of the day in March is 12h and 4min.
On the first day of the month, sunrise is at 06:23 and sunset at 18:13. On the last day of March, sunrise is at 06:01 and sunset at 18:18 AST.

Sunshine

The months with the most sunshine are March through August, with an average of 8h of 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 ultimate health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In March, the maximum UV index of 12 translates into these guidelines:
Take all critical precautions, unprotected skin might burn swiftly. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Applying and reapplying liberally a broad-spectrum sunscreen of SPF 30+ every two hours, and straight after a swim or outdoor activity is recommended. Caution! Sand and water surfaces escalate the UV intensity from the Sun.