May weather forecast
St Johnston Village, Antigua and Barbuda

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Weather in May

May finds St Johnston Village in the throes of a climatic transition with marked changes in weather parameters. In a sudden surge from April, rainfall almost doubles to 91mm (3.58"). Sea temperatures begin to rise, peaking the interest of water enthusiasts and casual swimmers alike. The trend of increasing daylight hours continues, achieving an average of 12.9 hours per day. A persistently high UV Index of 12 indicates that sunscreen and sun safety measures should remain a priority.

Temperature

May brings a marginal elevation to a hot 30°C (86°F) from April's 29°C (84.2°F) in St Johnston Village's average high-temperatures. St Johnston Village records an average low-temperature of 24°C (75.2°F) throughout the month of May.

Rainfall

In St Johnston Village, in May, during 14 rainfall days, 91mm (3.58") of precipitation is typically accumulated. In St Johnston Village, during the entire year, the rain falls for 180 days and collects up to 1040mm (40.94") of precipitation.

Sea temperature

In May, the average sea temperature in St Johnston Village, Antigua and Barbuda, is 27°C (80.6°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, ensuring all water activities are pleasurable for extended periods without feeling uneasy.

Daylight

In May, the average length of the day is 12h and 56min.
On the first day of May, sunrise is at 05:41 and sunset at 18:27. On the last day of the month, sunrise is at 05:32 and sunset at 18:37 AST.

Sunshine

The months with the most sunshine in St Johnston Village, Antigua and Barbuda, are January through August, with an average of 8h of sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an extreme threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, an average UV index of 12 transforms into the following instructions:
Employ every crucial safety step. Those with fair skin could experience burns in a matter of minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days. Apply and frequently reapply a broad-spectrum SPF 30+ sunscreen after every two hours, or immediately after a swim or outdoor exercise. Notice! Sand and water reflections contribute to a stronger UV exposure.

Frequently asked questions

How hot does it get in St Johnston Village in May?

The high-temperature, in May, in St Johnston Village, records 30°C (86°F), while the low-temperature is 24°C (75.2°F).

How much does it rain in St Johnston Village in May?

In May, in St Johnston Village, Antigua and Barbuda, the rain falls for 14 days. Throughout May, 91mm (3.58") of precipitation is accumulated.

How warm is the water in May in St Johnston Village?

In May, the average sea temperature is 27°C (80.6°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in May in St Johnston Village?

In May, the average day length is 12h and 56min.

When are sunrise and sunset in May in St Johnston Village?

In May, on the first day of the month, sunrise is at 05:41 and sunset at 18:27. On the last day of the month, sunrise is at 05:32 and sunset at 18:37 AST.

What are the months with the most sunshine in St Johnston Village?

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

How many hours of sunshine does St Johnston Village have in May?

In St Johnston Village, Antigua and Barbuda, the average sunshine duration in May is 8h.

What is the month with the highest UV index in St Johnston Village?

March through September, with an average maximum UV index of 12, are months with the highest UV index in St Johnston Village, Antigua and Barbuda.

What is the UV index intensity in May in St Johnston Village?

The average daily maximum UV index in May in St Johnston Village, Antigua and Barbuda, is 12. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in May
St Johnston Village, Antigua and Barbuda

Average temperature in May - St Johnston Village, Antigua and Barbuda
  • Average high temperature in May: 30°C

The warmest months (with the highest average high temperature) are July, August and September (31°C).
The months with the lowest average high temperature are January and February (28°C).

  • Average low temperature in May: 24°C

The months with the highest average low temperature are June, July, August and September (25°C).
The coldest months (with the lowest average low temperature) are January, February and March (22°C).

Average rainfall in May
St Johnston Village, Antigua and Barbuda

Average rainfall in May - St Johnston Village, Antigua and Barbuda
  • Average rainfall in May: 91mm

The wettest month (with the highest rainfall) is September (140mm).
The driest month (with the least rainfall) is February (37mm).

Average rainfall days in May
St Johnston Village, Antigua and Barbuda

Average rainfall days in May - St Johnston Village, Antigua and Barbuda
  • Average rainfall days in May: 14 days

The months with the highest number of rainy days are September, October, November and December (17 days).
The month with the least rainy days is April (11 days).

Average sea temperature in May
St Johnston Village, Antigua and Barbuda

Average sea temperature in May - St Johnston Village, Antigua and Barbuda
  • Average sea temperature in May: 27°C

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

Average daylight in May /
Average sunshine in May
St Johnston Village, Antigua and Barbuda

Average daylight in May / Average sunshine in May - St Johnston Village, Antigua and Barbuda
  • Average daylight in May: 12h and 5min

The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in May: 8h

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

Average UV index in May
St Johnston Village, Antigua and Barbuda

Average UV index in May - St Johnston Village, Antigua and Barbuda
  • Average UV index in May: 12

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

St Johnston Village, Antigua and Barbuda

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