September weather forecastPortobelo, Panama
September
Weather in September
A significant rise back to 29.3°C (84.7°F) signals a second peak of sea temperature in September, an unusual occurrence, before the onset of the cooler autumn months. This resurgence of heat is a welcome surprise for late summer visitors, providing an extended window for water-based activities. Although the daylight hours continue to decrease, reaching 12.2 hours, it does not significantly impact outdoor plans. Owing to its tropical maritime climate, Portobelo exhibits a unique dual-peak temperature pattern, which makes September a wonderfully unpredictable month.Sea temperature
June, September and October, with an average sea temperature of 29.3°C (84.7°F), are months with the warmest seawater.Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as highly pleasant, making all water activities enjoyable without any discomfort over long durations.
Daylight
In Portobelo, the average length of the day in September is 12h and 10min.On the first day of September in Portobelo, sunrise is at 06:09 and sunset at 18:27. On the last day of the month, sunrise is at 06:07 and sunset at 18:09 EST.
Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The months with the warmest seawater are June, September and October, with an average sea temperature of 29.3°C (84.7°F).
In Portobelo, in September, the average water temperature is 29.3°C (84.7°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.
In September, the average day length in Portobelo, Panama, is 12h and 10min.
On the first day of September in Portobelo, sunrise is at 06:09 and sunset at 18:27. On the last day of the month, sunrise is at 06:07 and sunset at 18:09 EST.
Average sea temperature in September
Portobelo, Panama
- Average sea temperature in September: 29.3°C
The best months for swimming (with the highest average sea temperature) are June, September and October (29.3°C).
The coldest month (with the lowest average sea temperature) is February (26.8°C).
Average daylight in September
Portobelo, Panama
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).





