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 (4.33") 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 entry into March measures an average high-temperature of a still moderately hot 29°C (84.2°F), matching the preceding month's conditions. Portsmouth experiences an average low-temperature of 21°C (69.8°F) in the month of March.

Rainfall

In Portsmouth, during March, the rain falls for 15 days and regularly aggregates up to 110mm (4.33") of precipitation. Throughout the year, there are 214 rainfall days, and 2252mm (88.66") of precipitation is accumulated.

Sea temperature

In March, the average sea temperature in Portsmouth, Dominica, is 26.9°C (80.4°F).
Note: For any water activity, the surface water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are deemed excellent and incredibly pleasant for longer durations.

Daylight

The average length of the day in March is 12h and 4min.
On the first day of March, sunrise is at 06:22 and sunset at 18:13. On the last day of the month, sunrise is at 06:01 and sunset at 18:18 AST.

Sunshine

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

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 12 in March interprets into the following recommendations:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Despite the cloudy weather, sunscreen with a sun protection factor of at least 30 should be liberally applied and reapplied, including after a swim or outdoor activity. Take heed! Reflections of sand and water make the Sun's UV rays stronger.