San Pedro Weather in September
September in San Pedro brings very high temperatures, with daytime highs of 30°C (86°F) and nights around 27°C (81°F). It's part of the rainy season, with 224 mm (8.8 in) of rainfall on average, so an umbrella or poncho is a good idea.
Rainfall in San Pedro in September
As part of the rainy season, San Pedro sees around 16 days of rain in September, with an average of 224 mm (8.8 in). With rain on many days and solid totals, showers are frequent and often moderately heavy. Waterproof gear is a sensible idea.
Temperature in San Pedro in September
In September, San Pedro sees very high temperatures, with highs of 30°C (86°F). Nights drop to around 27°C (81°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights are warm at 27°C (81°F), which can make sleeping uncomfortable. Keeping windows open or using a fan can help. A cold shower before bed is also a good way to cool down. It's the warmest month of the year on average, so summer clothing is the way to go.
Sunshine in San Pedro in September
You can expect a moderate amount of sunlight, with approximately 180 hours. Even though this month is part of the wet season, you can still see the sun occasionally.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit San Pedro. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Belize, check out our San Pedro's climate page.
San Pedro Temperature in September
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Chance of Rain
54%
Precipitation
224 mm (8.8 in)
Rainy days
16 days
Humidity
84% *
Sunshine
180 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Pedro typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for San Pedro in September
Browse day-by-day weather records for San Pedro spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Pedro historical weather extremes in September
Based on 49 years of weather observations in San Pedro between 1976 and 2025, these are the recorded extremes.
- The warmest day in September was on September 5, 2009, with a maximum of 39°C (102°F).
- San Pedro experienced its chilliest September day on September 17, 1986, reaching only 26°C (79°F).
- The lowest overnight temperature recorded in September was 14°C (57°F) (September 5, 2020).
Best Places in Belize in September
Find out more about the weather in Belize and which places have the best travel conditions in this month. See all of Belize in September →
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What to Wear in San Pedro in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in San Pedro 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 Belize, check out our San Pedro's climate page.
Temperature Rainfall Sunshine Humidity
See the full San Pedro climate overview or explore weather in Belize.
