Calliaqua weather in September

In September, Calliaqua sees average daytime highs of 28°C and overnight lows near 26°C, with 142 mm of rain across 19.2 wet days and about 12.1 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 35% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Calliaqua's 10th-clearest and 12th-windiest month. For the whole year in context, see Calliaqua's year-round climate.

Daytime high
28°
1st warmest
Overnight low
26°
12th coldest
Rainfall
142 mm
19.2 wet days
Daylight
12 h 06 min
5:57 AM – 6:01 PM
Cloud cover
59%
10th clearest
Wind
21 km/h
12th windiest
Solar energy
5.87 kWh/m²
Travel score
4.8
out of 10

Calliaqua is place in Saint Vincent, Saint Vincent and the Grenadines.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in Calliaqua reaches about 28°C in the afternoon and slips back to 26°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

24°26°28°30°32°151015202530
Avg high (°C)Avg low (°C)
12826
22826
32826
42826
52826
62826
72826
82826
92826
102826
112826
122826
132826
142826
152826
162826
172826
182826
192826
202826
212826
222826
232826
242826
252826
262826
272826
282826
292826
302826

How September really feels in Calliaqua

Once humidity and wind are folded in, September averages 28 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
28
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Calliaqua weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 25°3610.911.37.0
Feb26° / 25°217.611.67.5
Mar26° / 25°23711.97.6
Apr27° / 25°337.712.37.1
May27° / 26°4910.112.66.5
Jun27° / 26°9315.912.85.5
Jul27° / 26°12020.412.75.1
Aug28° / 26°14121.812.44.9
Sep28° / 26°14219.212.14.8
Oct28° / 26°15321.911.74.7
Nov27° / 26°13819.811.45.1
Dec27° / 26°5412.911.26.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15941
25941
35842
45842
55743
65644
75446
85347
95149
105050
114951
124852
134753
144654
154654
164456
174456
184555
194456
204456
214456
224555
234555
244555
254555
264456
274555
284456
294456
304555

Chance of precipitation in September

Any precipitation

Calliaqua gets around 142 mm of rain over 19.2 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 65% and peaks near 71% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
161
261
360
460
560
660
760
861
961
1062
1162
1263
1363
1464
1564
1665
1765
1866
1966
2067
2167
2267
2368
2468
2568
2669
2769
2870
2970
3071

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 52% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
14951
24951
34951
44852
54852
64852
74753
84753
94753
104753
114753
124753
134753
144852
154852
164852
174852
184852
194852
204852
214852
224852
234852
244852
254852
264852
274852
284852
294852
304951

Wind in September

Winds average 21 km/h in September, the calmest month.

Across September, daily wind ranges from about 22 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
122breezy
222breezy
322breezy
422breezy
522breezy
622breezy
722breezy
822breezy
922breezy
1022breezy
1122breezy
1222breezy
1322breezy
1422breezy
1522breezy
1622breezy
1722breezy
1822breezy
1922breezy
2022breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 18 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over September. Sunrise moves from 5:57 AM to 5:57 AM, and sunset from 6:12 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:576:12
212.25:576:11
312.25:576:11
412.25:576:10
512.25:576:09
612.25:576:09
712.25:576:08
812.25:576:07
912.25:576:06
1012.15:576:06
1112.15:576:05
1212.15:576:04
1312.15:576:03
1412.15:576:03
1512.15:576:02
1612.15:576:01
1712.15:576:01
1812.05:576:00
1912.05:575:59
2012.05:575:58
2112.05:575:58
2212.05:575:57
2312.05:575:56
2412.05:575:55
2512.05:575:55
2611.95:575:54
2711.95:575:53
2811.95:575:52
2911.95:575:52
3011.95:575:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.87 kWh/m².

For context, solar energy here swings from a low near 4.96 kWh/m² to a high of 6.57 kWh/m² in April across the year — September's 5.87 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.0Intense
56.0Intense
66.0Intense
76.0Intense
86.0Intense
96.0Bright
106.0Bright
116.0Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.6Bright
305.6Bright
Planning a trip in September

Hazard calendar for Calliaqua

In seasonPeak

In September, Calliaqua sits inside its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.

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

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

Calliaqua 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 September a good time to visit Calliaqua?

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

4.8
Sightseeing
11th-best month of the year
5.3
Beach & pool
9th-best month of the year

September is a reasonable time to visit Calliaqua for sightseeing.

What to pack for Calliaqua in September

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

In September, Calliaqua sees daytime highs around 28°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection and a windbreaker. About 19 days see rain.

light clothesrain gearsun protectiona windbreaker

Sea temperature near Calliaqua in September

The nearest coast averages about 29°C in September — 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
Nov29Tropical
Dec28Warm

UV index in Calliaqua in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Calliaqua peaks around March 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 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 12UV 8
UV index (midday)Level
Jan10Very high
Feb12Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Calliaqua in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Calliaqua is worst in June — around 31 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (January, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJun 1930 µg/m³Jan 111 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb15Moderate
Mar13Moderate
Apr17Moderate
May21Moderate
Jun31Moderate
Jul26Moderate
Aug21Moderate
Sep15Moderate
Oct18Moderate
Nov13Moderate
Dec11Good
Location & terrain

Where is Calliaqua?

Calliaqua sits at 13.1°N, 61.2°W, 18 m above sea level, in Saint Vincent and the Grenadines. The nearest listed city is Kingstown, 5.0 km away.

Topography around Calliaqua

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

Within 3 km, the terrain around Calliaqua has only modest variations in elevation — a maximum elevation change of 216 m around an average of 33 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 995 m; within 80 km, large variations in elevation — a maximum elevation change of 1,195 m.

The land around Calliaqua is covered by water (55%) and trees (29%) within 3 km, water (73%) and trees (24%) within 16 km, and water (95%) within 80 km.

3 km
216 m
16 km
995 m
80 km
1,195 m
treesgrasslandartificial surfaceswater
September weather nearby: Kingstown 5.0 km · Vieux Fort 70 km · Soufriere 82 km · Castries 98 km · Gros Islet 108 km · Saint George's 134 km · Ducos 163 km · Fort-de-France 165 km

Saint Vincent and the Grenadines travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / G
230 V · 50 Hz
Prices
≈ 55% of US
price level, 2025
GDP per capita
$12,562
2025
Homicide rate
51.3
per 100k, 2023
Road deaths
7.4
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Protestant 75%none 8%Roman Catholic 6%other 5%

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 Calliaqua (13.1287°, -61.1918°, elevation 18 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).