Monthly climate in Caye Caulker, Belize

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Caye Caulker features a tropical monsoon climate (Am). Temperatures typically range between 25 °C (77 °F) and 28 °C (83 °F) through the year, but rarely can drop to 19 °C (67 °F) or can rise to as high as 30 °C (87 °F). The average annual precipitation amounts to about 1584 mm (62.3 inches) and receives 212 rainy days on the 1 mm (0.04 inches) threshold annually. Caye Caulker enjoys an average of 3594 hours of sunshine throughout the year, and daylight varies from 11 hours 4 minutes to 13 hours 9 minutes per day.

Monthly average temperatures in Caye Caulker, Belize

The warmest months in Caye Caulker are July, August and September, with daily mean temperatures ranging from 28 to 28 °C (83 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 25 to 26 °C (77 - 78 °F) throughout the day. On average each year, Caye Caulker experiences 319 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Caye Caulker. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum28°C
(83°F)
29°C
(84°F)
27°C
(82°F)
29°C
(84°F)
29°C
(85°F)
30°C
(86°F)
29°C
(85°F)
30°C
(86°F)
30°C
(87°F)
30°C
(86°F)
29°C
(84°F)
28°C
(83°F)
Mean maximum27°C
(81°F)
27°C
(81°F)
27°C
(81°F)
28°C
(83°F)
29°C
(84°F)
29°C
(84°F)
29°C
(85°F)
29°C
(85°F)
30°C
(86°F)
30°C
(86°F)
28°C
(83°F)
28°C
(82°F)
Average high26°C
(79°F)
26°C
(80°F)
26°C
(80°F)
27°C
(81°F)
28°C
(83°F)
28°C
(83°F)
29°C
(84°F)
29°C
(84°F)
29°C
(84°F)
28°C
(83°F)
27°C
(81°F)
26°C
(80°F)
Daily mean25°C
(77°F)
26°C
(78°F)
26°C
(79°F)
27°C
(81°F)
28°C
(82°F)
28°C
(82°F)
28°C
(83°F)
28°C
(83°F)
28°C
(83°F)
27°C
(82°F)
26°C
(79°F)
26°C
(78°F)
Average low24°C
(76°F)
25°C
(77°F)
25°C
(78°F)
26°C
(80°F)
27°C
(81°F)
27°C
(81°F)
27°C
(81°F)
27°C
(81°F)
27°C
(81°F)
26°C
(80°F)
25°C
(78°F)
25°C
(77°F)
Mean minimum21°C
(70°F)
22°C
(72°F)
23°C
(74°F)
24°C
(76°F)
25°C
(78°F)
26°C
(78°F)
26°C
(78°F)
26°C
(79°F)
26°C
(79°F)
25°C
(77°F)
23°C
(74°F)
22°C
(71°F)
Minimum20°C
(68°F)
19°C
(67°F)
22°C
(73°F)
23°C
(73°F)
24°C
(76°F)
25°C
(78°F)
25°C
(77°F)
26°C
(78°F)
25°C
(78°F)
24°C
(76°F)
22°C
(73°F)
20°C
(69°F)

Compare climate in Caye Caulker with other places

Compare temperature, precipitation, sunshine, UV index in Caye Caulker, Belize with other places around the world.

Monthly average precipitation in Caye Caulker, Belize

Caye Caulker usually has the most precipitation in June, October and November, with an average of 21 rainy days and 250 mm (9.8 inches) of precipitation per month. The driest months in Caye Caulker are February, March and April. On average, 45 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Caye Caulker. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)93 (3.7)50 (1.9)45 (1.8)40 (1.6)82 (3.2)218 (8.6)118 (4.6)147 (5.8)166 (6.6)292 (11.5)240 (9.5)93 (3.6)
Average precipitation days (≥ 1 mm)15131171721202224242018

Monthly sunshine hours in Caye Caulker, Belize

The sunniest months in Caye Caulker are March, May and August, when the sun shines an average of 10 hours 33 minutes a day. Least sunny months in Caye Caulker: January, February and November receive an average of 8 hours 51 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Caye Caulker. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours234282322321332289320326302288280293
Mean daily daylight hours11h 11m11h 33m12h 2m12h 32m12h 57m13h 9m13h 3m12h 40m12h 12m11h 42m11h 17m11h 4m

Solar UV radiation in Caye Caulker, Belize

Caye Caulker experiences the highest level of ultraviolet (UV) radiation in April, August and September, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure. January, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 9. For more detailed information, check out our hourly Caye Caulker UV Index data.

Average daily maximum UV levels by month for Caye Caulker. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)911131413131313131298