nomadseason

Monthly climate in San Sebastian Coatan, Guatemala

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification San Sebastian Coatan features a subtropical climate (Cwb). Temperatures typically range between 13 °C (56 °F) and 17 °C (63 °F) through the year, but rarely can drop to 3 °C (38 °F) or can rise to as high as 27 °C (81 °F). The average annual precipitation amounts to about 2111 mm (83.1 inches) and receives 236 rainy days on the 1 mm (0.04 inches) threshold annually. San Sebastian Coatan enjoys an average of 3586 hours of sunshine throughout the year, and daylight varies from 11 hours 11 minutes to 13 hours 2 minutes per day.

Monthly average temperatures in San Sebastian Coatan, Guatemala

The warmest months in San Sebastian Coatan are April, May and June, with daily mean temperatures ranging from 17 to 17 °C (62 - 63 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 13 to 14 °C (56 - 58 °F) throughout the day. On average each year, San Sebastian Coatan experiences 9 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 San Sebastian Coatan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum25°C
(76°F)		26°C
(79°F)		26°C
(78°F)		27°C
(81°F)		26°C
(80°F)		26°C
(78°F)		24°C
(76°F)		24°C
(76°F)		24°C
(75°F)		24°C
(76°F)		23°C
(74°F)		23°C
(74°F)
Mean maximum23°C
(74°F)		24°C
(75°F)		25°C
(77°F)		26°C
(79°F)		26°C
(78°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(73°F)		23°C
(73°F)
Average high19°C
(66°F)		20°C
(69°F)		21°C
(71°F)		23°C
(74°F)		23°C
(73°F)		22°C
(71°F)		21°C
(71°F)		22°C
(71°F)		22°C
(71°F)		21°C
(70°F)		20°C
(68°F)		19°C
(67°F)
Daily mean13°C
(56°F)		14°C
(58°F)		15°C
(59°F)		17°C
(62°F)		17°C
(63°F)		17°C
(62°F)		16°C
(61°F)		16°C
(61°F)		16°C
(62°F)		16°C
(61°F)		15°C
(59°F)		14°C
(57°F)
Average low9°C
(48°F)		9°C
(48°F)		9°C
(49°F)		11°C
(52°F)		12°C
(55°F)		13°C
(55°F)		12°C
(53°F)		12°C
(54°F)		12°C
(55°F)		12°C
(54°F)		11°C
(51°F)		9°C
(49°F)
Mean minimum5°C
(42°F)		5°C
(42°F)		6°C
(43°F)		8°C
(46°F)		10°C
(50°F)		11°C
(52°F)		9°C
(49°F)		9°C
(49°F)		10°C
(51°F)		9°C
(49°F)		7°C
(45°F)		6°C
(42°F)
Minimum3°C
(38°F)		3°C
(38°F)		5°C
(41°F)		7°C
(45°F)		9°C
(48°F)		10°C
(50°F)		8°C
(48°F)		9°C
(48°F)		9°C
(49°F)		8°C
(47°F)		6°C
(44°F)		4°C
(39°F)

Compare climate in San Sebastian Coatan with other places

Compare temperature, precipitation, sunshine, UV index in San Sebastian Coatan, Guatemala with other places around the world.

Monthly average precipitation in San Sebastian Coatan, Guatemala

San Sebastian Coatan usually has the most precipitation in June, August and September, with an average of 28 rainy days and 344 mm (13.5 inches) of precipitation per month. The driest months in San Sebastian Coatan are February, March and December. On average, 36 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Sebastian Coatan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)52 (2.1)34 (1.4)31 (1.2)95 (3.7)255 (10.1)401 (15.8)179 (7.0)295 (11.6)336 (13.2)263 (10.4)125 (4.9)44 (1.7)
Average precipitation days (≥ 1 mm)10109172928252828251611

Monthly sunshine hours in San Sebastian Coatan, Guatemala

The sunniest months in San Sebastian Coatan are March, July and August, when the sun shines an average of 10 hours 23 minutes a day. Least sunny months in San Sebastian Coatan: January, February and June receive an average of 8 hours 56 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Sebastian Coatan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours247284321313308274325320294288297310
Mean daily daylight hours11h 17m11h 37m12h 2m12h 29m12h 51m13h 2m12h 56m12h 36m12h 11m11h 45m11h 22m11h 11m

Solar UV radiation in San Sebastian Coatan, Guatemala

San Sebastian Coatan experiences the highest level of ultraviolet (UV) radiation in April, August and September, when the maximum UV index can reach values of 15 - 16, which corresponds to the Extreme category of sun exposure. January, November and December are in the Very High / Extreme exposure category. In these months, the maximum values of the UV index do not exceed 11. For more detailed information, check out our hourly San Sebastian Coatan UV Index data.

Average daily maximum UV levels by month for San Sebastian Coatan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)111315161515151515131110