Caye Caulker weather in August

In August, Caye Caulker sees average daytime highs of 29°C and overnight lows near 27°C, with 180 mm of rain across 22.5 wet days and about 12.6 hours of daylight. It is the 1st-warmest and 5th-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 41% of the time in August, and the air most often feels miserable.

Daylight stretches from about 12 h 48 min at the start of August to 12 h 24 min by month's end. Set against the rest of the year, August is Caye Caulker's 8th-clearest and 9th-windiest month. For the whole year in context, see Caye Caulker's year-round climate.

Daytime high
29°
1st warmest
Overnight low
27°
12th coldest
Rainfall
180 mm
22.5 wet days
Daylight
12 h 36 min
5:38 AM – 6:14 PM
Cloud cover
54%
8th clearest
Wind
20 km/h
9th windiest
Solar energy
6.14 kWh/m²
Travel score
4.2
out of 10

Caye Caulker is island.

Density
693/km²
people per km²

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

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

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

24°26°28°30°32°151015202531
Avg high (°C)Avg low (°C)
12827
22927
32927
42927
52927
62927
72927
82927
92927
102927
112927
122927
132927
142927
152927
162927
172927
182927
192927
202927
212927
222927
232927
242927
252927
262927
272927
282927
292927
302927
312927

How August really feels in Caye Caulker

Once humidity and wind are folded in, August averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Caye Caulker weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 24°10216.211.16.2
Feb26° / 24°439.611.47.1
Mar26° / 25°387.911.97.6
Apr27° / 26°295.712.47.6
May28° / 27°10013.212.86.1
Jun28° / 27°19120.4134.4
Jul28° / 27°14220.7134.6
Aug29° / 27°18022.512.64.2
Sep29° / 27°20624.312.13.8
Oct28° / 26°30023.111.64.4
Nov27° / 25°20319.311.25.3
Dec26° / 24°11018115.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 16% of August, with mostly cloudy or overcast conditions the remaining 44%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
26040
35941
45941
55842
65842
75842
85743
95743
105644
115644
125644
135644
145644
155644
165743
175743
185743
195644
205743
215743
225545
235545
245545
255545
265446
275545
285446
295446
305446
315347

Chance of precipitation in August

Any precipitation

Caye Caulker gets around 180 mm of rain over 22.5 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 72% and peaks near 76% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
165
266
366
467
567
668
769
869
970
1070
1171
1272
1372
1473
1573
1674
1774
1875
1975
2075
2176
2276
2376
2476
2576
2676
2776
2876
2976
3076
3176

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 90% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
11288
21189
31189
41189
51189
61189
71189
81189
91189
101090
111090
121090
131090
141090
15991
16991
17991
18991
19892
20892
21892
22892
23892
24892
25892
26892
27991
28991
29991
301090
311090

Wind in August

Winds average 20 km/h in August.

Across August, daily wind ranges from about 18 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
320breezy
420breezy
520breezy
620breezy
720breezy
820breezy
920breezy
1020breezy
1120breezy
1220breezy
1320breezy
1420breezy
1520breezy
1620breezy
1720breezy
1820light breeze
1920light breeze
2020light breeze
2120light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze
3118light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 48 min at the start of August to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over August. Sunrise moves from 5:34 AM to 5:41 AM, and sunset from 6:22 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:346:22
212.85:346:22
312.85:356:21
412.85:356:21
512.85:356:21
612.75:356:20
712.75:366:20
812.75:366:19
912.75:366:19
1012.75:376:18
1112.75:376:17
1212.75:376:17
1312.65:376:16
1412.65:386:16
1512.65:386:15
1612.65:386:14
1712.65:386:14
1812.65:396:13
1912.65:396:12
2012.55:396:12
2112.55:396:11
2212.55:396:10
2312.55:406:09
2412.55:406:09
2512.55:406:08
2612.45:406:07
2712.45:406:06
2812.45:416:06
2912.45:416:05
3012.45:416:04
3112.45:416:03

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.14 kWh/m².

For context, solar energy here swings from a low near 4.09 kWh/m² to a high of 6.63 kWh/m² in April across the year — August's 6.14 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.2Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.1Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in August

Hazard calendar for Caye Caulker

In seasonPeak

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

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

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

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

Is August a good time to visit Caye Caulker?

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

4.2
Sightseeing
11th-best month of the year
5.2
Beach & pool
10th-best month of the year

August is a reasonable time to visit Caye Caulker for sightseeing.

What to pack for Caye Caulker in August

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

In August, Caye Caulker sees daytime highs around 29°C and nights near 27°C. Pack light clothes, rain gear and sun protection. About 23 days see rain.

light clothesrain gearsun protection

Sea temperature near Caye Caulker in August

The nearest coast averages about 30°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 19 km away) is warmest in September at about 30°C and coldest in January near 26°C.

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

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar27Warm
Apr28Warm
May29Tropical
Jun29Tropical
Jul29Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov28Warm
Dec27Warm

UV index in Caye Caulker in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Caye Caulker peaks around April 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 10UV 13Dec 16UV 7
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec7Very high

Air quality in Caye Caulker in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Caye Caulker is worst in July — around 31 µg/m³ PM2.5 (moderate), about 5.0× the cleanest month (December, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1131 µg/m³Dec 116 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb10Good
Mar9Good
Apr14Moderate
May19Moderate
Jun30Moderate
Jul31Moderate
Aug22Moderate
Sep14Moderate
Oct9Good
Nov6Good
Dec6Good
Location & terrain

Where is Caye Caulker?

Caye Caulker sits at 17.7°N, 88.0°W, 0 m above sea level, in Belize. The nearest listed city is San Pedro, 21 km away.

San PedroBelize CityCrooked TreeOrange WalkDangrigaChetumalBelmopanHopkins

Topography around Caye Caulker

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

Within 3 km, the terrain around Caye Caulker has only modest variations in elevation — a maximum elevation change of 6 m around an average of 0 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 8 m; within 80 km, significant variations in elevation — a maximum elevation change of 394 m.

The land around Caye Caulker is covered by water (93%) within 3 km, water (97%) within 16 km, and water (63%) and trees (21%) within 80 km.

3 km
6 m
16 km
8 m
80 km
394 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
August weather nearby: San Pedro 21 km · Belize City 32 km · Crooked Tree 55 km · Orange Walk 68 km · Dangriga 88 km · Chetumal 92 km · Belmopan 95 km · Hopkins 101 km

Belize travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / G
110 / 220 V · 60 Hz
Prices
≈ 53% of US
price level, 2025
GDP per capita
$7,865
2025
Happiness
6.7 / 10
World Happiness, 2025
Homicide rate
28.1
per 100k, 2022
Road deaths
22.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Roman Catholic 40%Protestant 32%none 16%other 11%

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 Caye Caulker (17.7366°, -88.0276°, elevation 0 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).