San Andrés Weather in September
During September, San Andrés experiences high daytime temperatures of 30°C (86°F) and cooler nights around 26°C (79°F). September sits within the rainy season, so expect regular and often heavy rainfall.
Rainfall in San Andrés in September
San Andrés is in the rainy season in September, with rain on around 21 days and an average of 239 mm (9.4 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in San Andrés in September
September in San Andrés sees highs of 30°C (86°F) and lows of 26°C (79°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 26°C (79°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.
Sunshine in San Andrés in September
There are approximately 194 hours of sunshine this month, despite being the rainy season. Rain often arrives in the late afternoon or evening, keeping mornings and early afternoons sunny. Even during the wet season, it could still be a nice time to visit.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March and April typically offer the best weather for San Andrés.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Colombia, check out our San Andrés's climate page.
San Andrés Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
30°C (86°F)
Chance of Rain
70%
Precipitation
239 mm (9.4 in)
Rainy days
21 days
Sunshine
194 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Andrés typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Historical weather for San Andrés in September
Browse day-by-day weather records for San Andrés spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Andrés historical weather extremes in September
Our historical data for San Andrés spans 1976 to 2025, revealing these weather extremes.
- On September 9, 2017, temperatures climbed to 39°C (102°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 22°C (72°F), recorded on September 10, 1992.
- The lowest overnight temperature recorded in September was 19°C (66°F) (September 2, 2013).
Best Places in Colombia in September
Find out more about the weather in Colombia and which places have the best travel conditions in this month. See all of Colombia in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in San Andrés in September
Warm but pleasant conditions in San Andrés in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in San Andrés in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Colombia, check out our San Andrés's climate page.
See the full San Andrés climate overview or explore weather in Colombia.
