Antigua climate guide

Temperature in Antigua (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
28°C maximum daytime temperature in January in Antigua (St John's)28
28°C maximum daytime temperature in February in Antigua (St John's)28
29°C maximum daytime temperature in March in Antigua (St John's)29
29°C maximum daytime temperature in April in Antigua (St John's)29
30°C maximum daytime temperature in May in Antigua (St John's)30
30°C maximum daytime temperature in June in Antigua (St John's)30
31°C maximum daytime temperature in July in Antigua (St John's)31
31°C maximum daytime temperature in August in Antigua (St John's)31
31°C maximum daytime temperature in September in Antigua (St John's)31
30°C maximum daytime temperature in October in Antigua (St John's)30
30°C maximum daytime temperature in November in Antigua (St John's)30
29°C maximum daytime temperature in December in Antigua (St John's)29
Min temperature (night-time)
22°C minimum night-time temperature in January in Antigua (St John's)22
22°C minimum night-time temperature in February in Antigua (St John's)22
22°C minimum night-time temperature in March in Antigua (St John's)22
23°C minimum night-time temperature in April in Antigua (St John's)23
24°C minimum night-time temperature in May in Antigua (St John's)24
25°C minimum night-time temperature in June in Antigua (St John's)25
25°C minimum night-time temperature in July in Antigua (St John's)25
25°C minimum night-time temperature in August in Antigua (St John's)25
25°C minimum night-time temperature in September in Antigua (St John's)25
24°C minimum night-time temperature in October in Antigua (St John's)24
23°C minimum night-time temperature in November in Antigua (St John's)23
23°C minimum night-time temperature in December in Antigua (St John's)23
Sea temperature
26°C sea temperature in January in Antigua (St John's)26
26°C sea temperature in February in Antigua (St John's)26
26°C sea temperature in March in Antigua (St John's)26
27°C sea temperature in April in Antigua (St John's)27
27°C sea temperature in May in Antigua (St John's)27
28°C sea temperature in June in Antigua (St John's)28
28°C sea temperature in July in Antigua (St John's)28
28°C sea temperature in August in Antigua (St John's)28
29°C sea temperature in September in Antigua (St John's)29
29°C sea temperature in October in Antigua (St John's)29
28°C sea temperature in November in Antigua (St John's)28
27°C sea temperature in December in Antigua (St John's)27

Sunshine & Daylight in Antigua

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
11 hours of daylight per day in January in Antigua (St John's)11
12 hours of daylight per day in February in Antigua (St John's)12
12 hours of daylight per day in March in Antigua (St John's)12
13 hours of daylight per day in April in Antigua (St John's)13
13 hours of daylight per day in May in Antigua (St John's)13
13 hours of daylight per day in June in Antigua (St John's)13
13 hours of daylight per day in July in Antigua (St John's)13
13 hours of daylight per day in August in Antigua (St John's)13
12 hours of daylight per day in September in Antigua (St John's)12
12 hours of daylight per day in October in Antigua (St John's)12
11 hours of daylight per day in November in Antigua (St John's)11
11 hours of daylight per day in December in Antigua (St John's)11

Rainfall in Antigua

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
16 days with some rainfall in January in Antigua (St John's)16
13 days with some rainfall in February in Antigua (St John's)13
12 days with some rainfall in March in Antigua (St John's)12
11 days with some rainfall in April in Antigua (St John's)11
14 days with some rainfall in May in Antigua (St John's)14
14 days with some rainfall in June in Antigua (St John's)14
16 days with some rainfall in July in Antigua (St John's)16
16 days with some rainfall in August in Antigua (St John's)16
17 days with some rainfall in September in Antigua (St John's)17
17 days with some rainfall in October in Antigua (St John's)17
17 days with some rainfall in November in Antigua (St John's)17
17 days with some rainfall in December in Antigua (St John's)17
Average monthly rainfall (mm)
67 mm monthly rainfall in January in Antigua (St John's)67
37 mm monthly rainfall in February in Antigua (St John's)37
40 mm monthly rainfall in March in Antigua (St John's)40
57 mm monthly rainfall in April in Antigua (St John's)57
91 mm monthly rainfall in May in Antigua (St John's)91
70 mm monthly rainfall in June in Antigua (St John's)70
79 mm monthly rainfall in July in Antigua (St John's)79
124 mm monthly rainfall in August in Antigua (St John's)124
140 mm monthly rainfall in September in Antigua (St John's)140
134 mm monthly rainfall in October in Antigua (St John's)134
113 mm monthly rainfall in November in Antigua (St John's)113
88 mm monthly rainfall in December in Antigua (St John's)88

More climate for Antigua

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
UV (maximum) index 8 (Very High) in January in Antigua (St John's)8
UV (maximum) index 10 (Very High) in February in Antigua (St John's)10
UV (maximum) index 11+ (Extreme) in March in Antigua (St John's)11
UV (maximum) index 11+ (Extreme) in April in Antigua (St John's)11
UV (maximum) index 11+ (Extreme) in May in Antigua (St John's)11
UV (maximum) index 11+ (Extreme) in June in Antigua (St John's)11
UV (maximum) index 11+ (Extreme) in July in Antigua (St John's)11
UV (maximum) index 11+ (Extreme) in August in Antigua (St John's)11
UV (maximum) index 11+ (Extreme) in September in Antigua (St John's)11
UV (maximum) index 10 (Very High) in October in Antigua (St John's)10
UV (maximum) index 9 (Very High) in November in Antigua (St John's)9
UV (maximum) index 8 (Very High) in December in Antigua (St John's)8
Heat & Humidity
Moderate heat & humidity in January in Antigua (St John's)M
Moderate heat & humidity in February in Antigua (St John's)M
Moderate heat & humidity in March in Antigua (St John's)M
High heat & humidity in April in Antigua (St John's)H
High heat & humidity in May in Antigua (St John's)H
High heat & humidity in June in Antigua (St John's)H
Very high heat & humidity in July in Antigua (St John's)VH
Very high heat & humidity in August in Antigua (St John's)VH
Very high heat & humidity in September in Antigua (St John's)VH
High heat & humidity in October in Antigua (St John's)H
High heat & humidity in November in Antigua (St John's)H
Moderate heat & humidity in December in Antigua (St John's)M

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

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The climate guide for Antigua, represented by St John's, shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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Metric (°C / mm)  |  Imperial (°F / inches)

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Antigua climate overview

The dual-island nation of Antigua and Barbuda lies at the northern end of the eastern Caribbean island chain. It was a British colony for centuries and today exists as an independent country within the Commonwealth. Tourism is by far the mainstay of the economy, employing more than half of the islanders, who are mainly of African decent.

Antigua is the main island, supporting 98% of the population. It is here that tourists are drawn to the idyllic beaches, finding a mixture of small resorts and unspoilt shoreline. The interior is largely unspectacular scrubland with salt marshes, although occasional banana, coconut, and mango plantations in the south form greener pockets.

Much of Antigua is surrounding by coral reefs, which attract a diverse and colourful array of marine life. The warm coastal waters are calm, clear, and blue making conditions ideal for snorkelling and scuba diving.

The island of Barbuda is rarely visited by tourists. Nevertheless, it has beautiful and deserted beaches and the few local residents are hopelessly outnumbered by a large colony of distinctive frigate birds.

The tropical climate has a short winter dry season running from February to April. This is also the sunniest time of the year, broken only by a few afternoon clouds and very occasional showers. The peak rainy season lasts from September to November, with the latter month being usually by far the wettest, when heavy and persistent downpours are likely. Temperatures remain warm all year round, and hurricanes are possible anytime from June to November.

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