Zacapa, Guatemala climate

Aw Tropical savanna (dry winter)

Zacapa has a remarkably steady tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is April with an average daily high near 33°C, while the coldest is January averaging around 17°C at night. Precipitation totals about 1073 mm a year and is strongly seasonal — September alone averages 221 mm while January barely receives 1 mm.

☀️ All year

Hot

Daytime highs near 33°C most of the year.

🌙 Nights

Stays warm

Even the coolest nights stay near 17°C.

🌧️ Rain

Wet

About 1073 mm of rain a year.

Wettest in September

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Zacapa climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	28	30	32	33	32	30	30	30	30	29	28	28
Avg temp (°C)	23	24	25	26	26	25	25	25	25	24	23	23
Avg low (°C)	17	17	18	20	20	20	20	20	20	20	18	17
Precipitation (mm)	1	1	5	34	123	196	152	173	221	131	33	2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	28	30	32	33	32	30
Avg temp (°C)	23	24	25	26	26	25
Avg low (°C)	17	17	18	20	20	20
Precipitation (mm)	1	1	5	34	123	196

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	30	30	30	29	28	28
Avg temp (°C)	25	25	25	24	23	23
Avg low (°C)	20	20	20	20	18	17
Precipitation (mm)	152	173	221	131	33	2

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	36	34	35	47	68	76	68	70	75	67	48	38
Relative humidity (%)	77	70	64	62	71	81	82	83	86	86	85	82
Wind speed (m/s)	2.8	2.7	2.6	2.2	1.7	1.4	1.6	1.4	1.2	1.7	2.5	2.6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	36	34	35	47	68	76
Relative humidity (%)	77	70	64	62	71	81
Wind speed (m/s)	2.8	2.7	2.6	2.2	1.7	1.4

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	68	70	75	67	48	38
Relative humidity (%)	82	83	86	86	85	82
Wind speed (m/s)	1.6	1.4	1.2	1.7	2.5	2.6

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Nueva Ocotepeque, a weather station, about 69 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →