Weather in San Andres Island in September 2025
Average weather
Average temperature in San Andres Island in September
The expected average maximum temperature in September is +29°C with a maximum of +30°C and a minimum of +26°C.
The average maximum temperature goes down 25% by the end of the month, compared with the beginning of the month, from +30°C to +29°C.
Is San Andres Island warm or cold in September?
San Andres Island is typically warm in September.
Maximum temperatures go up compared to the previous month from +28°C to +28°C. The minimum temperature also goes up from +26°C to +26°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
September is one of the warmest months in San Andres Island, here is the comparison with other months:
Climate in San Andres Island in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +28°C | +28°C | +28°C | ||||
| Min. temperature | ||||||
| +24°C | +24°C | +24°C | ||||
| Max. temperature | ||||||
| +30°C | +30°C | +30°C | ||||
| Rainfall | ||||||
| 234 mm | 227 mm | 283 mm | ||||
| Wind | ||||||
| 4 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 85% | 84% | 85% | ||||
| Air pressure | ||||||
| 1010 HPa | 1010 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 0 | 0 | 0 | ||||
| Cloudy days | ||||||
| 1 | 1 | 1 | ||||
| Rainy days | ||||||
| 28 | 27 | 29 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. The temperature levels stay the same in the area of +28°C for average maximum temperature during the day. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 234 mm to 227 mm. It feels drier, as humidity decreases from 85% to 84%. Winds are calmer in comparison to August, going down from 4 m/s to 3 m/s on average. The amount of sunny days stay about the same, averaging 0 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in San Andres Island is gradually increasing during September, going from 3 m/s to 4 m/s over the course of the month.
Rain
How was the weather last September in San Andres Island?
Climate Change over Years
The climate in San Andres Island in September has not changed much over the last 43 years.
The average temperature was the lowest in 1986 (+27°C) and the highest in 2023 (+28°C). The driest year was 2015 with only 1372 mm of rainfall, and the wettest year was 2008 with 2406 mm.
FAQ
Is September a good time to visit San Andres Island?
Can you sunbathe in San Andres Island in September?
Is San Andres Island rainy in September?
Is it sunny in San Andres Island in September?
Other cities in Colombia
Monthly weather in San Andres Island
Source of the data
For this page, we’ve looked at the typical weather in San Andres Island, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.