Climate Insights for Caió

Caio Sector, Cacheu Region, Guinea-Bissau

Hottest
November
30°C peak
Coldest
January
23°C low
Wettest
August
526mm rain
Best to Visit
January, February, March
Mild temps & low rain

Climate Overview

The climate in Caió is hot. The average annual temperature is 26°C and approximately 1463mm of precipitation falls per year. August is the wettest month, receiving around 526mm of rainfall. Caió is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: November, October, December. The coldest months are January, February, March, when temperatures can drop to 23°C.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 27° Average: 25° Min: 23° Feb Max: 27° Average: 25° Min: 23° Mar Max: 27° Average: 25° Min: 23° Apr Max: 27° Average: 25° Min: 23° May Max: 26° Average: 25° Min: 24° Jun Max: 27° Average: 26° Min: 26° Jul Max: 28° Average: 27° Min: 26° Aug Max: 27° Average: 27° Min: 26° Sep Max: 28° Average: 27° Min: 26° Oct Max: 29° Average: 28° Min: 27° Nov Max: 30° Average: 28° Min: 27° Dec Max: 29° Average: 26° Min: 24°
Max
Average
Min

Caió has relatively stable temperatures year-round, staying within a 7°C range. The warmest month is November, when average highs reach 30°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 23°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm 450mm 500mm 550mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 0mm Feb Precipitation: 0mm Mar Precipitation: 0mm Apr Precipitation: 0mm May Precipitation: 1mm Jun Precipitation: 52mm Jul Precipitation: 460mm Aug Precipitation: 526mm Sep Precipitation: 321mm Oct Precipitation: 89mm Nov Precipitation: 14mm Dec Precipitation: 0mm
Precipitation

Caió is a fairly wet location, receiving approximately 1463mm of precipitation annually, which averages out to around 122mm per month. The wettest month is August, averaging 526mm of rainfall. July and September also tend to see above-average precipitation. The driest month is December, with just 0mm. That's 526mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Wind

0km/h 5km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 4km/h Feb Wind Speed: 5km/h Mar Wind Speed: 5km/h Apr Wind Speed: 5km/h May Wind Speed: 5km/h Jun Wind Speed: 4km/h Jul Wind Speed: 5km/h Aug Wind Speed: 5km/h Sep Wind Speed: 4km/h Oct Wind Speed: 3km/h Nov Wind Speed: 3km/h Dec Wind Speed: 4km/h
Wind Speed

Caió is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

92 days until Autumn

It is currently summer in Caió, which began on June 21, 2026. Caió is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in November at around 30°C, while the coldest stretch bottoms out in January near 23°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

Spring

Temperatures range from 23 to 27°C. Precipitation is minimal, with only around 1mm for the entire season. Winds are generally light, averaging 5km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.

Summer

Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 1038mm across the season with a monthly average of 346mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 26 to 30°C. Rainfall is heavy, totalling around 424mm across the season with a monthly average of 141mm. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 23 to 29°C. Precipitation is minimal, with only around 0mm for the entire season. Winds are generally light, averaging 4km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan 25°
Feb 25°
Mar 25°
Apr 25°
May 25°
Jun 26°
Jul 27°
Aug 27°
Sep 27°
Oct 28°
Nov 28°
Dec 26°

The best time to visit Caió is during January, February, March, April and May, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 0mm per month. By contrast, November can be uncomfortably hot with temperatures reaching 30°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

Monthly Climate Data

The table below shows monthly climate averages for Caió based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
23 °C
27 °C
4 km/h
0 mm
0 cm
Feb
23 °C
27 °C
5 km/h
0 mm
0 cm
Mar
23 °C
27 °C
5 km/h
0 mm
0 cm
Apr
23 °C
27 °C
5 km/h
0 mm
0 cm
May
24 °C
26 °C
5 km/h
1 mm
0 cm
Jun Current
26 °C
27 °C
4 km/h
52 mm
0 cm
Jul
26 °C
28 °C
5 km/h
460 mm
0 cm
Aug
26 °C
27 °C
5 km/h
526 mm
0 cm
Sep
26 °C
28 °C
4 km/h
321 mm
0 cm
Oct
27 °C
29 °C
3 km/h
89 mm
0 cm
Nov
27 °C
30 °C
3 km/h
14 mm
0 cm
Dec
24 °C
29 °C
4 km/h
0 mm
0 cm
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