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Climate - Montserrat

Temperature, rainfall, prevailing weather conditions, when to go, what to pack

See also the US version (°F - inches - feet)

Flag - Montserrat

The climate of Monserrat is tropical, hot and humid all year round, with little variation in temperature between the coldest month, which is February, with 25.5 °C on average, and the warmest, which is September, with an average of 28.5 °C. Clearly in the hottest period, which runs from May to October, the heat is more intense, even though the cool sea breeze blows. From November to April, the coolest period, the northeast trade winds blow constantly.
The available data of the average temperatures in Plymouth are a bit lower than the present day, because they refer to a past period.
Plymouth average temperatures
Plymouth J F M A M J J A S O N D
Min (°C) 20 20 20 21 22 23 23 23 23 23 22 21
Max (°C) 27 27 27 28 29 29 30 30 30 29 29 29

The rainfall is abundant in Montserrat, amounting to 1,600 millimetres per year in the former capital Plymouth, of which more than 100 mm per month from May to January, and more than 150 mm from July to November. The driest month is February, with an average of 85 mm, which means that some showers are possible even in this period. The rains continue for a while after the end of the hot and wet period, because in the first months of the north-east trade winds, the sea is still warm enough to provide energy and moisture for the formation of thunderclouds.
The rains in Montserrat occur throughout the year especially in the form of downpour or thunderstorm, and they do not affect much the amount of sunshine, while tropical cyclones, called hurricanes in the Caribbean, may cover the sun for a longer time. Hurricanes may occur from June to November, but are most likely from August to October, as happens in the Antilles.
Here is the average precipitation.
Average precipitation Plymouth
Plymouth J F M A M J J A S O N D Year
Prec. (mm) 120 85 100 90 95 110 155 180 170 195 180 110 1590
Days 12 9 9 8 10 14 14 16 13 14 16 13 148

Montserrat is an island, overseas territory of the United Kingdom, and its southern part, including the capital Plymouth, was devastated by the volcanic eruption of 1995. The southern part has been declared "exclusion zone", while the northern part is still inhabited, and is believed to be protected from volcanic eruptions.


The sea is pleasantly warm all year round, as we can see from the following table.
Sea temperature Montserrat
Montserrat J F M A M J J A S O N D
Sea (°C) 27 26 26 27 28 28 28 28 29 29 28 27

When to go

The best time to visit Montserrat goes from February to April, being the driest. From mid-December to late January, there are some additional showers, but it's still the least hot period, so all in all this is an acceptable period as well. In the summer months, June and July have a lower risk of heavy rains, compared with August and September.

What to pack

All year round: light clothes of natural fabric, possibly a light sweatshirt and a light raincoat for thunderstorms.
For the reef, equipment for snorkeling, water shoes or rubber soled shoes.

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Near countries:
Antigua and Barbuda
British Virgin Islands
Saint Barthelemy
Saint Kitts and Nevis

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