September is one of the warmer months of the year in Panama City, with average highs near 29°C and lows around 24°C (mean 26.5°C). It is a relatively wet time of year, averaging 141 mm of rainfall and 77% relative humidity across the period.
September is one of the warmer months of the year in Panama City. Across 45 years of records, the warmest September in Panama City was 2019 — when the month averaged 28.3°C — while the coldest was 1983 at 25°C. Typical September days reach 29°C with nights near 24°C. The long-term trend is warming, about 0.3°C per decade.
September is a relatively wet time of year in Panama City, averaging 141 mm of rainfall. The wettest September on record was 1998 with 503 mm, while the driest was 2019 at 13 mm.
Relative humidity in Panama City during September averages 77%. The most humid September was 1998 at 86%, and the least humid was 1990 at 68%.
September receives about 5 kWh/m²/day of solar energy in Panama City. The sunniest September was 2019 at 5.9 kWh/m²/day, and the cloudiest was 1988 at 3.9.
Average wind speed in Panama City during September is 3.2 m/s. The windiest September was 2004 at 5 m/s, while the calmest were 1981, 1986 and 2016 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 25.8°C | 26.6°C | 26.4°C | 27.0°C | 26.9°C | +1.1°C |
| Avg High | 28.2°C | 29.1°C | 28.9°C | 29.5°C | 29.4°C | +1.2°C |
| Avg Low | 23.3°C | 24.0°C | 24.0°C | 24.5°C | 24.5°C | +1.2°C |
| Avg Rain | 139 mm | 141 mm | 135 mm | 119 mm | 192 mm | +53 mm |
September temperatures in Panama City have risen by about 1.7°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 15.1°C (1983) to a record high of 34°C (2024).
Rainfall in September is a relatively wet time of year, averaging 141 mm, with a wettest year of 503 mm.
A good time to visit Panama City
September is a good time to visit Panama City, with days averaging 29°C and nights around 24°C (mean 26.5°C, warmer than Panama City's yearly average) and higher rainfall. October and May are marginally more temperate, but September still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 30.8°C | 27.3°C | 23.9°C | 32.7°C | 21.2°C | 45 mm | 69% | 2.7 m/s | 5.7 |
| 2024 | 29.2°C | 27.2°C | 25.2°C | 34.0°C | 23.1°C | 404 mm | 81% | 3.2 m/s | 4.2 |
| 2023 | 30.2°C | 27.7°C | 25.3°C | 32.0°C | 21.8°C | 116 mm | 73% | 2.8 m/s | 5.1 |
| 2022 | 29.3°C | 26.8°C | 24.2°C | 31.6°C | 17.1°C | 117 mm | 74% | 3.2 m/s | 5.3 |
| 2021 | 28.3°C | 26.3°C | 24.3°C | 30.3°C | 17.7°C | 190 mm | 81% | 2.6 m/s | 4.9 |
| 2020 | 28.3°C | 26.2°C | 24.1°C | 32.4°C | 17.2°C | 281 mm | 83% | 4.4 m/s | 4.3 |
| 2019 🔥 | 31.3°C | 28.3°C | 25.4°C | 32.8°C | 22.9°C | 13 mm | 74% | 3.3 m/s | 5.9 |
| 2018 | 30.0°C | 28.0°C | 26.1°C | 31.5°C | 24.8°C | 149 mm | 80% | 2.6 m/s | 5.1 |
| 2017 | 28.7°C | 26.1°C | 23.5°C | 30.4°C | 17.5°C | 103 mm | 79% | 3.1 m/s | 5 |
| 2016 | 29.4°C | 27.2°C | 24.9°C | 31.3°C | 19.0°C | 149 mm | 77% | 2.5 m/s | 5.2 |
| 2015 | 28.9°C | 26.4°C | 23.9°C | 31.5°C | 19.1°C | 175 mm | 78% | 3.3 m/s | 4.7 |
| 2014 | 29.5°C | 27.1°C | 24.6°C | 31.8°C | 18.8°C | 121 mm | 77% | 2.8 m/s | 4.6 |
| 2013 | 29.2°C | 26.9°C | 24.6°C | 31.1°C | 20.0°C | 125 mm | 80% | 2.9 m/s | 5.1 |
| 2012 | 28.3°C | 25.9°C | 23.5°C | 30.5°C | 19.4°C | 139 mm | 79% | 3.2 m/s | 5.1 |
| 2011 | 28.8°C | 26.0°C | 23.3°C | 30.7°C | 19.2°C | 135 mm | 74% | 3.2 m/s | 5 |
| 2010 | 30.7°C | 27.8°C | 24.8°C | 33.5°C | 18.7°C | 81 mm | 70% | 2.9 m/s | 5.8 |
| 2009 | 28.7°C | 26.7°C | 24.6°C | 30.4°C | 18.7°C | 177 mm | 81% | 2.9 m/s | 4.7 |
| 2008 | 28.9°C | 26.3°C | 23.7°C | 30.6°C | 16.6°C | 32 mm | 77% | 3.9 m/s | 5.3 |
| 2007 | 30.3°C | 27.5°C | 24.7°C | 33.2°C | 20.7°C | 134 mm | 74% | 3.7 m/s | 5.3 |
| 2006 | 29.0°C | 26.7°C | 24.3°C | 31.5°C | 18.7°C | 108 mm | 72% | 3 m/s | 5 |
| 2005 | 29.9°C | 27.1°C | 24.2°C | 32.6°C | 20.2°C | 57 mm | 78% | 3.7 m/s | 5.5 |
| 2004 | 28.2°C | 25.8°C | 23.5°C | 31.4°C | 19.3°C | 175 mm | 82% | 5 m/s | 4.7 |
| 2003 | 27.7°C | 25.3°C | 22.9°C | 30.3°C | 15.6°C | 123 mm | 81% | 3.3 m/s | 5.2 |
| 2002 | 29.4°C | 27.3°C | 25.2°C | 32.8°C | 22.2°C | 203 mm | 81% | 3.8 m/s | 4.5 |
| 2001 | 28.0°C | 25.3°C | 22.6°C | 31.0°C | 15.7°C | 135 mm | 75% | 3.1 m/s | 5.2 |
| 2000 | 28.5°C | 26.2°C | 23.9°C | 30.7°C | 17.5°C | 206 mm | 79% | 3.7 m/s | 4.9 |
| 1999 | 29.9°C | 26.7°C | 23.4°C | 32.8°C | 18.3°C | 69 mm | 69% | 3.7 m/s | 5.3 |
| 1998 🌧️ | 28.1°C | 26.2°C | 24.3°C | 30.3°C | 21.3°C | 503 mm | 86% | 4.5 m/s | 4 |
| 1997 | 29.6°C | 27.1°C | 24.5°C | 32.9°C | 20.9°C | 93 mm | 75% | 2.7 m/s | 5.5 |
| 1996 | 28.2°C | 26.0°C | 23.7°C | 29.9°C | 18.9°C | 165 mm | 79% | 3 m/s | 4.8 |
| 1995 | 30.3°C | 27.2°C | 24.1°C | 32.5°C | 20.1°C | 57 mm | 73% | 3 m/s | 5.2 |
| 1994 | 27.8°C | 25.7°C | 23.5°C | 29.5°C | 20.7°C | 157 mm | 80% | 3.2 m/s | 4.9 |
| 1993 | 29.4°C | 26.9°C | 24.5°C | 32.2°C | 16.9°C | 105 mm | 74% | 2.9 m/s | 4.9 |
| 1992 | 28.0°C | 26.0°C | 24.0°C | 29.8°C | 18.2°C | 149 mm | 81% | 2.9 m/s | 4.5 |
| 1991 | 28.7°C | 26.1°C | 23.4°C | 31.6°C | 17.2°C | 56 mm | 80% | 3.2 m/s | 5.4 |
| 1990 | 30.7°C | 27.7°C | 24.8°C | 33.1°C | 17.5°C | 53 mm | 68% | 2.8 m/s | 5.4 |
| 1989 | 28.7°C | 26.1°C | 23.5°C | 31.3°C | 17.7°C | 174 mm | 79% | 3.2 m/s | 4.9 |
| 1988 | 28.3°C | 26.2°C | 24.2°C | 30.5°C | 19.6°C | 286 mm | 85% | 3.3 m/s | 3.9 |
| 1987 | 28.0°C | 25.9°C | 23.7°C | 30.4°C | 19.1°C | 140 mm | 77% | 2.7 m/s | 4.7 |
| 1986 | 29.1°C | 26.9°C | 24.7°C | 31.7°C | 22.2°C | 137 mm | 80% | 2.5 m/s | 5 |
| 1985 | 27.7°C | 25.1°C | 22.5°C | 30.7°C | 16.6°C | 116 mm | 81% | 3.6 m/s | 5.2 |
| 1984 | 28.4°C | 25.5°C | 22.6°C | 30.4°C | 18.9°C | 29 mm | 77% | 3.4 m/s | 5.3 |
| 1983 ❄️ | 27.5°C | 25.0°C | 22.4°C | 31.1°C | 15.1°C | 192 mm | 76% | 3.4 m/s | — |
| 1982 | 27.6°C | 25.4°C | 23.3°C | 31.0°C | 15.8°C | 124 mm | 77% | 2.8 m/s | — |
| 1981 | 28.8°C | 25.8°C | 22.9°C | 30.8°C | 16.0°C | 53 mm | 69% | 2.5 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 29°C with lows near 24°C (mean 26.5°C), based on 45 years of NASA POWER data.
September averages 141 mm of rainfall in Panama City, a relatively wet time of year. The wettest on record was 503 mm in 1998.
The hottest September reached 34°C in 2024. The coldest dipped to 15.1°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.7°C. Daytime highs moved from 28°C to 29.6°C and overnight lows from 22.7°C to 24.6°C over the same span.
September is one of the warmer months of the year in Panama City and a relatively wet time of year, so plan for around 29°C daytime highs and 24°C at night.
Not quite — September is the 9th coolest month in Panama City, averaging 26.5°C.
For September in Panama City, pack light layers you can adjust through the day, with typical highs of 29°C and lows of 24°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 77% — quite humid.
Average wind speed in September is 3.2 m/s. The windiest September on record averaged 5 m/s (2004).
The wettest September on record was 1998 with 503 mm. On average, September sees 141 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Panama City behaves each September, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for September specifically, along with year-by-year records and how the month has changed over the decades.
