Climate averages 1991–2020

Cayenne weather
in January.

A warm, very wet month: one of the coolest and the 8th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 27.6°C Daytime mean, January

Average low 23.3°C Night-time mean, January

Rainfall 244 mm 27 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

January is a warm month in Cayenne: daytime highs average 27.6°C and nights cool to about 23.3°C. By daytime temperature it is one of the coolest months of the year.

Expect about 244 mm of rain on roughly 27 days, which makes January a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 52 min on an average January day.

The nearest other city in this atlas is Paramaribo (330 km away). In January its highs average 28.1°C, 0.5°C warmer than Cayenne, with 110 mm of rain.

From January to February, average highs stay level at 27.6°C, and monthly rainfall falls from 244 mm to 205 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Cayenne climate table

1991–2020

Monthly climate averages for Cayenne, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	27.6°C23.3°C	23.3°C	244	26.6	11.912 h
February	27.6°C23.5°C	23.5°C	205	22.5	12.012 h
March	28.1°C23.8°C	23.8°C	173	23.9	12.112 h
April	28.3°C23.8°C	23.8°C	257	25.0	12.212 h
May	28.2°C23.6°C	23.6°C	411	29.1	12.312 h
June	28.3°C23.2°C	23.2°C	343	28.5	12.412 h
July	28.9°C23.2°C	23.2°C	186	24.8	12.412 h
August	30.1°C23.7°C	23.7°C	67	13.9	12.312 h
September	31.3°C24.2°C	24.2°C	23	7.2	12.112 h
October	31.5°C24.3°C	24.3°C	39	10.1	12.012 h
November	30.1°C24.1°C	24.1°C	122	19.6	11.912 h
December	28.4°C23.6°C	23.6°C	253	26.5	11.812 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

January in nearby cities

Distance from Cayenne

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Cayenne) is explained once on the Cayenne year overview and on the Sources, method and limits page.