Gros Islet weather in April

In April, Gros Islet sees average daytime highs of 29°C and overnight lows near 25°C, with 36 mm of rain across 11.5 wet days and about 12.3 hours of daylight. It is the 7th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 32% of the time in April, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of April to 12 h 30 min by month's end. Set against the rest of the year, April is Gros Islet's 8th-clearest and 8th-windiest month. For the whole year in context, see Gros Islet's year-round climate.

Daytime high
29°
7th warmest
Overnight low
25°
5th coldest
Rainfall
36 mm
11.5 wet days
Daylight
12 h 18 min
5:55 AM – 6:13 PM
Cloud cover
56%
8th clearest
Wind
20 km/h
8th windiest
Solar energy
6.65 kWh/m²
Travel score
5.4
out of 10

Gros Islet is town in Saint Lucia.

Density
248/km²
people per km²
Founded
1749

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical April day in Gros Islet reaches about 29°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, April runs on par with March and on par with May.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
152924
162925
172925
182925
192925
202925
212925
222925
232925
242925
252925
262925
272925
282925
292925
302925

How April really feels in Gros Islet

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Gros Islet weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°3111.811.36.5
Feb28° / 24°218.811.56.7
Mar28° / 24°269.811.96.1
Apr29° / 25°3611.512.35.4
May29° / 25°4712.512.64.9
Jun29° / 25°6515.112.84.5
Jul29° / 25°8320.312.74.2
Aug30° / 26°9920.712.54.0
Sep30° / 26°10419.412.13.9
Oct29° / 25°11920.911.74.0
Nov29° / 25°10218.911.34.5
Dec28° / 25°421311.25.7

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 26% of April, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16436
26337
36337
46337
56238
66139
76139
86040
96040
106040
115842
125842
135842
145842
155644
165644
175644
185644
195644
205644
215743
225644
235644
245644
255545
265644
275644
285644
295545
305644

Chance of precipitation in April

Any precipitation

Gros Islet gets around 36 mm of rain over 11.5 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
137
237
338
438
539
639
739
839
939
1039
1139
1239
1339
1439
1538
1638
1737
1837
1936
2036
2136
2236
2336
2435
2535
2635
2735
2835
2935
3035

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

Most of April feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, April lands in the oppressive band about 49% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1026533
2026434
3126235
4126136
5126037
6125938
7125839
8125740
9125641
10125542
11125443
12125344
13125245
14025147
15025048
16024850
17024751
18014653
19014455
20014356
21014257
22004159
23004060
24003961
25003961
26003862
27003862
28003763
29003763
30003763

Wind in April

Winds average 20 km/h in April.

Across April, daily wind ranges from about 20 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
120breezy
220breezy
320breezy
420breezy
520breezy
620breezy
720breezy
820breezy
920breezy
1020breezy
1120breezy
1220breezy
1320breezy
1420breezy
1520breezy
1620breezy
1720breezy
1820breezy
1920breezy
2020breezy
2120breezy
2220breezy
2320breezy
2420breezy
2520breezy
2620breezy
2720breezy
2820breezy
2920breezy
3020breezy

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 06 min at the start of April to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over April. Sunrise moves from 6:05 AM to 5:47 AM, and sunset from 6:12 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:056:12
212.16:046:12
312.16:036:12
412.26:036:12
512.26:026:12
612.26:016:12
712.26:016:13
812.26:006:13
912.25:596:13
1012.25:596:13
1112.25:586:13
1212.35:576:13
1312.35:576:13
1412.35:566:13
1512.35:556:13
1612.35:556:13
1712.35:546:14
1812.35:536:14
1912.45:536:14
2012.45:526:14
2112.45:526:14
2212.45:516:14
2312.45:506:14
2412.45:506:15
2512.45:496:15
2612.45:496:15
2712.45:486:15
2812.55:486:15
2912.55:476:15
3012.55:476:16

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6.65 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.95 kWh/m² to a high of 6.65 kWh/m² in April across the year — April's 6.65 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.6Intense
76.6Intense
86.6Intense
96.6Intense
106.6Intense
116.6Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.7Intense
186.7Intense
196.7Intense
206.7Intense
216.7Intense
226.7Intense
236.7Intense
246.7Intense
256.7Intense
266.7Intense
276.7Intense
286.7Intense
296.7Intense
306.7Intense
Planning a trip in April

Hazard calendar for Gros Islet

In seasonPeak

None of Gros Islet's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Gros Islet sits in the Atlantic hurricane belt; the season peaks August–October.

Gros Islet's rainy season runs June–November, when most of the year's rain falls.

Gros Islet sees seasonal dust haze (June–July), heaviest in June.

Atlantic hurricane
Rainy season
Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is April a good time to visit Gros Islet?

Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.4
Sightseeing
5th-best month of the year
6.8
Beach & pool
4th-best month of the year

April is a reasonable time to visit Gros Islet for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Gros Islet in April

From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In April, Gros Islet sees daytime highs around 29°C and nights near 25°C. Pack light clothes and sun protection. Worth having: rain gear and a windbreaker. About 12 days see rain.

light clothessun protectionrain geara windbreaker

Sea temperature near Gros Islet in April

The nearest coast averages about 27°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in September at about 29°C and coldest in February near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr27Warm
May28Warm
Jun28Warm
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec28Warm

UV index in Gros Islet in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Gros Islet peaks around March 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 21UV 14Dec 13UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun11Extreme
Jul12Extreme
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Gros Islet in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in Gros Islet is worst in June — around 29 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (December, 10 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 1929 µg/m³Dec 2310 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar12Good
Apr16Moderate
May19Moderate
Jun29Moderate
Jul25Moderate
Aug21Moderate
Sep15Moderate
Oct18Moderate
Nov13Moderate
Dec10Good
Location & terrain

Where is Gros Islet?

Gros Islet sits at 14.1°N, 61.0°W, 58 m above sea level, in Saint Lucia. The nearest listed city is Castries, 10 km away.

CastriesSoufriereVieux Fort

Topography around Gros Islet

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Gros Islet.

Within 3 km, the terrain around Gros Islet has only modest variations in elevation — a maximum elevation change of 235 m around an average of 44 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 657 m; within 80 km, large variations in elevation — a maximum elevation change of 1,149 m.

The land around Gros Islet is covered by trees (59%) and water (20%) within 3 km, water (73%) and trees (24%) within 16 km, and water (88%) within 80 km.

3 km
235 m
16 km
657 m
80 km
1,149 m
treesgrasslandartificial surfaceswaterwetland
April weather nearby: Castries 10 km · Soufriere 26 km · Vieux Fort 39 km · Ducos 57 km · Le Lamentin 61 km · Le François 61 km · Fort-de-France 61 km · Saint-Joseph 68 km

Saint Lucia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / G
240 V · 50 Hz
Prices
≈ 51% of US
price level, 2025
GDP per capita
$14,746
2025
Homicide rate
39
per 100k, 2023
Road deaths
29.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Roman Catholic 62%Protestant 26%none 6%other Christian 3%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Gros Islet (14.0667°, -60.95°, elevation 58 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).