Climate and Weather in St. Martin

Climate and Weather in St. Martin

Landscapes and Vegetation

St. Martin is a mountainous, volcanic island. Its highest point is Pic Paradis, which reaches 424 meters in altitude,

on the French side of the island.

Varied Landscapes

The St. Martin coastline is made up of both steep, craggy cliffs, and beautiful white sand beaches. Some of the beaches are peppered with sea grape trees, palm trees, and coconut trees. Mangroves, those buffer zones between sea and swamp, create nurseries for fish and nesting areas for birds. They play a protective role when extreme weather takes place, lessening the destruction caused by events like hurricanes. The sandy stretches of beach retain a dozen inland swamps. The majority of the island’s settlements were built upon these sand banks, between sea and lagoon, making this feature characteristic of St. Martin’s landscape.

Relatively Dry Vegetation 

St. Martin is a good example of a dry-climate island, with sparse hills and other areas where flora is abundant. The east coast, also known as the windy coast, is swept by trade winds, which come in contact with the cliffs, making clouds gather and turning the heat into rain showers. This combination makes the vegetation on the windy coast verdant and rich. On the very west, the more protected limestone plateau of Terres Basses has a drier coastal vegetation, and is covered in brush and cactus.

St. Martin, Ideal Weather All Year Long

It’s always summertime in St. Martin. Like anywhere in the Caribbean, St. Martin has a tropical climate, hot and humid, with temperatures that are tempered by trade winds, which only change subtly throughout the year.

Consistent Temperatures

The average annual temperature in St. Martin is 27°. Peaks are a maximum of 32°, and it rarely dips below 20°. The temperature is consistent and benefits from trade winds. There isn’t an actual rainy season, and the showers, or squalls, are relatively brief.

Two Seasons

Despite St. Martin’s fairly steady temperatures, the island recognizes two distinct seasons: dry season, from December to April, and wet season, from May to November. The dry season corresponds to the high tourist season. During this period of the year, morning and evening temperatures are cooler, yet don’t dip below the average 20°.  During wet season, temperatures remain higher all day long. In St. Martin, there isn’t as much of a contrast in rainfall between the dry and wet seasons when compared to islands further south, like Guadeloupe and Martinique. All year long, the sun rises between 5 and 6 a.m. and sets between 5 and 7 p.m. The longest days of the year are between April and September.

Hurricane Season

Wet season is generally associated with hurricane season and lasts from June to November. Hurricanes are created when extreme heat meets the very warm waters of tropical latitudes.

Average Temperatures and Rainfall in St. Martin

 

jan

feb

mar

apr

may

jun

jul

aug

sep

oct

nov

dec

Rainfall (cm)

5,4

4,3

4,4

6

10,4

5,6

7,1

8,6

10,6

15,8

15,2

8,7

Air temp. (C°)

28

28,5

29

29

30

30,5

31,5

31

31

30,5

29,5

28,5

Water temp.(C°)

26,5

26

26,5

27

28

28,5

28,5

29

29

29,5

28,5

27,5

  Climate and Weather
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