March weather forecast
Roseau, Dominica

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A calm, clear waterfront in the valley city of Roseau, Dominica
A calm, clear waterfront in the valley city of Roseau, Dominica

Weather in March

March’s weather in Roseau, Dominica, begins to reflect the heart of the tropical climate, paving the way for longer days ahead. Transitioning from February, the upward temperature trend introduces a warmth that’s a hallmark of the region. Rain and sunshine maintain their dance, ensuring that the city's vibrant botanical life thrives. Even as the days become longer, the sea remains a constant, comforting presence. The UV index peaks this month, necessitating diligent sun care measures for residents and travelers.

Temperature

Welcoming March, Roseau notes an average high-temperature of a hot 30°C (86°F), nearly consistent with February's 29°C (84.2°F). During March, Roseau's temperature falls to a steady low-temperature average of 21°C (69.8°F).

Rainfall

In Roseau, during March, the rain falls for 15 days and regularly aggregates up to 93mm (3.66") of precipitation. Throughout the year, there are 218 rainfall days, and 1996mm (78.58") of precipitation is accumulated.

Sea temperature

February and March, with an average sea temperature of 26°C (78.8°F), are months with the coldest seawater in Roseau, Dominica.
Note: For engaging in water activities including swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are perceived as perfect, providing pleasure for extended durations.

Daylight

In Roseau, the average length of the day in March is 12h and 4min.
On the first day of the month, sunrise is at 06:22 and sunset at 18:13. On the last day of March, in Roseau, sunrise is at 06:00 and sunset at 18:17 AST.

Sunshine

The months with the most sunshine are March through August, with an average of 8h of 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 reading of 11, and higher, represents an extreme threat to health from unsafe exposure to UV radiation for the average person.
Note: A maximum daily UV index of 12 during March morphs into the following directions:
Adopt every precaution of necessity, unprotected skin and eyes may suffer burns instantly. 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. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Directly after outdoor activities or swimming, a broad-spectrum sunscreen with SPF 30+ should be applied generously and reapplied frequently. Warning! The Sun's UV rays intensify with reflections from sand and water.

Frequently asked questions

Is it hot in Roseau during March?

The high-temperature, in March, in Roseau, is 30°C (86°F), while the low-temperature averages to 21°C (69.8°F).

How many days does it rain in March in Roseau?

In March, in Roseau, the rain falls for 15 days. Throughout March, 93mm (3.66") of precipitation is accumulated.

What are the months with the coldest sea water in Roseau?

February and March, with an average sea temperature of 26°C (78.8°F), are months with the coldest seawater.

What is the water temperature in March in Roseau?

In Roseau, Dominica, in March, the average water temperature is 26°C (78.8°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Roseau have in March?

The average day length in March in Roseau, Dominica, is 12h and 4min.

What time are sunrise and sunset in March in Roseau?

On the first day of March in Roseau, sunrise is at 06:22 and sunset at 18:13. On the last day of the month, sunrise is at 06:00 and sunset at 18:17 AST.

What are the months with the most sunshine in Roseau?

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

How many hours of sunshine does Roseau have in March?

In March, the average sunshine duration is 8h.

What is the month with the highest UV index in Roseau?

The months with the highest UV index are March through September, with an average maximum UV index of 12.

What is the UV index intensity in March in Roseau?

The average daily maximum UV index in March in Roseau, Dominica, is 12. A UV Index estimate of 11, and higher, represents an extreme health vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in March
Roseau, Dominica

Average temperature in March - Roseau, Dominica
  • Average high temperature in March: 30°C

The warmest months (with the highest average high temperature) are May, June, July, August, September and October (31°C).
The months with the lowest average high temperature are January, February and December (29°C).

  • Average low temperature in March: 21°C

The month with the highest average low temperature is August (24°C).
The coldest months (with the lowest average low temperature) are January, February, March and December (21°C).

Average rainfall in March
Roseau, Dominica

Average rainfall in March - Roseau, Dominica
  • Average rainfall in March: 93mm

The wettest month (with the highest rainfall) is November (252mm).
The driest months (with the least rainfall) are February and April (87mm).

Average rainfall days in March
Roseau, Dominica

Average rainfall days in March - Roseau, Dominica
  • Average rainfall days in March: 15 days

The month with the highest number of rainy days is September (23 days).
The months with the least rainy days are February and April (14 days).

Average sea temperature in March
Roseau, Dominica

Average sea temperature in March - Roseau, Dominica
  • Average sea temperature in March: 26°C

The best months for swimming (with the highest average sea temperature) are September and October (29°C).
The coldest months (with the lowest average sea temperature) are February and March (26°C).

Average daylight in March /
Average sunshine in March
Roseau, Dominica

Average daylight in March / Average sunshine in March - Roseau, Dominica
  • Average daylight in March: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 12min).

  • Average sunshine in March: 8h

The months with the most sunshine are March, April, May, June, July and August (Average sunshine: 8h).
The months with the least sunshine are January, February, September, October, November and December (Average sunshine: 7h).

Average UV index in March
Roseau, Dominica

Average UV index in March - Roseau, Dominica
  • Average UV index in March: 12

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 8).

Roseau, Dominica

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