Your April weather guide

Hot

Weather in Antigua in April

April is a good time to visit Antigua if you want hot days and a warm sea, but can accept some rain. Average daytime highs are 27.3°C, nights stay around 24.5°C and the sea averages 26.7°C. For a UK traveller, that means proper swimming weather without daytime temperatures routinely reaching extreme levels. The catch is the humidity: this is warm, humid weather rather than dry heat, with little cooling after dark.

Long-term climate averages for St John's, not a forecast · 1991-2020

Antigua, month by month

Your snapshot

At a glance

The useful details for St John's.

Average daytime high
27.3°C
9 in 10 days stay below 29°C
Average night-time low
24.5°C
coldest 10% of nights: 24°C or lower
Compared with London
+13.8°C
London averages 13.5°C in April
Sea temperature
26.7°C
year to year: 26°C to 27°C
Sunshine per day (est.)
7.5h
60% of 12.4 h of daylight
Rainy days (1 mm+)
10
36 mm over the month
Humidity
74%
Days over 25°C
99%
1% over 30°C
Record high 1991-2020
30.8°C
2020-04-10
Record low 1991-2020
21.7°C
2008-04-11
Flight from London
≈ 9 h
6569 km, long-haul (estimate for a direct flight)

Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.

How April compares

April is the 8th warmest month of the year in Antigua and ranks 38th of 134 destinations we compare for April - see where else is hot in April. Against London's average high of 13.5°C in April, Antigua is 13.8°C warmer by day and 19.4°C warmer at night.

Daytime and night-time in April

The typical April day in Antigua peaks at 27.3°C, but that is an average: the warmest 10% of days reach 28.5°C or more. About 99% of days top 25°C and 1 in 111 pass 30°C. Nights average 24.5°C; one night in ten drops to 23.5°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest April day here reached 30.8°C (2020-04-10) and the coldest night 21.7°C (2008-04-11).

Rain in April

Wet (more than 8 rainy days): about 10 days with 1 mm or more, 36 mm in total. Year to year it varies a lot - the wettest April was 2016 with 80 mm, the driest 2007 with 9 mm. Humidity averages 74%.

Sea temperature in April

The sea averages 26.7°C - warm enough to swim (22°c+). Depending on the year it ranges from 26.1°C to 27.4°C. For the warmest sea here, come in September (28.9°C).

Sunshine and daylight

Around 7.5 hours of sunshine a day (estimated from cloud cover), 12.4 hours of daylight: the sun rises about 05:52 and sets about 18:23 local time in mid-April. Average cloud cover is 40%.

Is April a good time to visit Antigua?

Yes - it is one of the better months: hot days, manageable rain and long sunny days. The best months for Antigua on our scoring are March, February, April; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Hot days, with little relief after dark

Antigua feels markedly warmer than London in April, where the average daytime high is 13.5°C. Days reaching 25°C are almost certain, while only 1% reach 30°C, so April suits travellers who want reliable warmth without choosing Antigua's hottest month. Humidity averages 74%, though, so temperatures alone do not tell you how comfortable walking around will feel. Keep more active plans for the cooler parts of the day and leave room for shade around midday. Pack loose, breathable clothes rather than a wardrobe built around cool evenings. With nights averaging 24.5°C, somewhere comfortable to cool down and sleep matters more than bringing heavy layers.

Make flexible plans for rain and sunshine

April is not a rain-free choice: about 10 days have measurable rain, so leave some flexibility in plans that depend on staying outdoors. That figure does not mean those days are complete washouts, but it also cannot promise that rain will neatly avoid your swimming time. A light waterproof is sensible, preferably something that will not feel too heavy in the humidity. There is still useful sunshine, averaging about 7.5 hours within 12.4 hours of daylight. Make sun protection part of your daily routine, and use the longer daylight window to spread activities out rather than trying to do everything in the midday heat.

A little perspective

Antigua through the year

April is highlighted. See how it compares with the rest of the year.

Monthly climate averages

Swipe sideways on a phone; the month stays in view.

Antigua monthly climate averages, 1991-2020; April is the selected month.
MonthDayNightSeaSun/dayRain mmRainy daysDays 25°C+
January26.3°C24.1°C26.5°C7.7341197%
Februarybest26.3°C23.9°C26.1°C7.824897%
Marchbest26.7°C24.0°C26.2°C7.724898%
AprilSelectedbest27.3°C24.5°C26.7°C7.5361099%
May28.0°C25.3°C27.4°C5.76614100%
June28.6°C25.9°C27.8°C5.85413100%
July28.7°C26.0°C28.1°C6.77917100%
August28.9°C26.2°C28.6°C6.410119100%
September28.8°C26.2°C28.9°C4.812419100%
October28.3°C25.9°C28.8°C5.213219100%
November27.6°C25.3°C28.2°C6.110317100%
December26.8°C24.7°C27.3°C7.0601499%

Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.

Day, night and sea

Monthly average temperatures, 1991-2020

  • Day
  • Night
  • Sea
Bars show average daytime highs and night-time lows; circles mark the average sea temperature. Same scale for every month. Exact values are in the table.

Best months here

On warmth, low rainfall and sunshine, start with these.

Keep exploring

Similar in April

Closest matches on daytime temperature, sea temperature and sunshine, in other countries.

A little more detail

Antigua in April FAQs

Plain answers, grounded in the averages.

Is Antigua hot in April?

Antigua is hot in April: the average daytime high is 27.3°C and nights average 24.5°C. About 99% of April days reach 25°C or more.

Can you swim in the sea in Antigua in April?

The sea around Antigua averages 26.7°C in April, which is warm enough for most people to swim comfortably. Between 1991 and 2020 it ranged from 26°C to 27°C depending on the year.

How much does it rain in Antigua in April?

Antigua sees about 10 rainy days (1 mm or more) and 36 mm of rain in a typical April. The wettest April between 1991 and 2020 was 2016 (80 mm) and the driest was 2007 (9 mm).

How sunny is Antigua in April?

Antigua gets around 7.5 hours of sunshine a day in April out of 12.4 hours of daylight (estimated from average cloud cover).

How does Antigua compare with the UK in April?

Antigua is on average 13.8°C warmer than London by day in April (27.3°C against 13.5°C).

What is the hottest April on record in Antigua?

Between 1991 and 2020 the hottest April day in Antigua reached 30.8°C on 2020-04-10, and the coldest night dropped to 21.7°C on 2008-04-11.

Is the sea warm enough for swimming in April?

Yes. The sea averages 26.7°C, with a year-to-year range of 26°C to 27°C, making April a comfortable choice for warm-water swimming. Sea temperature is a clear reason to go then, although it does not tell you what local water conditions will be like.

Is April among the best months to visit Antigua?

Yes. April sits alongside March and February among Antigua's best months overall. It suits travellers looking for hot weather and warm swimming rather than the highest possible temperatures. The trade-off is humid air and a real chance of rain, so it is not a guaranteed dry-weather holiday.

How long is the flight from London?

The flight from London takes about 9 hours, so this is a long-haul trip for a warm-weather break. April's reliable daytime warmth and swimmable sea make a strong case for the journey, provided you are comfortable with humidity and some rain.

About these averages

ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020

Averages computed from daily values at Saint John’s (St John's). Sea temperature from the nearest 5 km sea cell, 3.4 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather