Santa Marta, Colombia climate

BWh Hot desert

Santa Marta has a remarkably steady tropical climate (Hot desert, Köppen BWh). The hottest month is May with an average daily high near 33°C, while the coldest is January averaging around 23°C at night. Precipitation totals about 411 mm a year and is strongly seasonal — October alone averages 97 mm while January barely receives 0 mm.

☀️ Summers

Hot

Highs near 33°C in May.

❄️ Winters

Mild

Lows near 23°C in January.

🌧️ Rain

Fairly dry

About 411 mm of rain a year.

Wettest in October

⛅ 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)

Santa Marta climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	33	34	34	34	33	33	33	33	33	32	32	33
Avg temp (°C)	28	29	29	30	30	30	29	29	29	29	28	28
Avg low (°C)	23	24	25	26	26	26	26	25	25	25	24	24
Precipitation (mm)	0	4	4	8	44	35	45	59	46	97	59	10

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	33	34	34	34	33	33
Avg temp (°C)	28	29	29	30	30	30
Avg low (°C)	23	24	25	26	26	26
Precipitation (mm)	0	4	4	8	44	35

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	33	33	33	32	32	33
Avg temp (°C)	29	29	29	29	28	28
Avg low (°C)	26	25	25	25	24	24
Precipitation (mm)	45	59	46	97	59	10

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	23	25	35	54	67	62	58	61	69	70	59	35
Relative humidity (%)	71	67	67	72	78	78	76	79	82	83	82	76
Wind speed (m/s)	4.2	4.5	4.4	3.7	2.7	2.6	2.8	2.5	2.2	2.3	2.8	3.7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	23	25	35	54	67	62
Relative humidity (%)	71	67	67	72	78	78
Wind speed (m/s)	4.2	4.5	4.4	3.7	2.7	2.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	58	61	69	70	59	35
Relative humidity (%)	76	79	82	83	82	76
Wind speed (m/s)	2.8	2.5	2.2	2.3	2.8	3.7

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 23 years of daily observations at Simon Bolivar, a weather station, about 14 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 →