May is close to Pago Pago's year-round average, with average highs near 28.2°C and lows around 27.6°C (mean 27.9°C). It is one of the drier months, averaging 149 mm of rainfall and 80% relative humidity across the period.
May is close to Pago Pago's year-round average. Across 45 years of records, the warmest May in Pago Pago was 2024 — when the month averaged 29.3°C — while the coldest was 1987 at 26.3°C. Typical May days reach 28.2°C with nights near 27.6°C. The long-term trend is warming, about 0.3°C per decade.
May is one of the drier months in Pago Pago, averaging 149 mm of rainfall. The wettest May on record was 2025 with 319 mm, while the driest was 2011 at 16 mm.
Relative humidity in Pago Pago during May averages 80%. The most humid May was 1981 at 83%, and the least humid was 1997 at 76%.
May receives about 4.5 kWh/m²/day of solar energy in Pago Pago. The sunniest Mays were 2011 and 2021 at 5 kWh/m²/day, and the cloudiest was 2025 at 3.7.
Average wind speed in Pago Pago during May is 4.8 m/s. The windiest May was 1993 at 6.8 m/s, while the calmest was 2019 at 3.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.3°C | 27.5°C | 28.1°C | 28.2°C | 28.6°C | +1.3°C |
| Avg High | 27.6°C | 27.8°C | 28.4°C | 28.5°C | 28.9°C | +1.3°C |
| Avg Low | 27.0°C | 27.2°C | 27.8°C | 27.9°C | 28.3°C | +1.3°C |
| Avg Rain | 184 mm | 131 mm | 142 mm | 135 mm | 163 mm | -22 mm |
May temperatures in Pago Pago have risen by about 1.1°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 24.7°C (1987) to a record high of 30.3°C (2024).
Rainfall in May is one of the drier months, averaging 149 mm, with a wettest year of 319 mm.
A good time to visit Pago Pago
May is a good time to visit Pago Pago, with days averaging 28.2°C and nights around 27.6°C (mean 27.9°C, close to Pago Pago's yearly average) and higher rainfall. August and July are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 🌧️ | 28.8°C | 28.5°C | 28.2°C | 29.4°C | 26.9°C | 319 mm | 82% | 5.8 m/s | 3.7 |
| 2024 🔥 | 29.6°C | 29.3°C | 29.1°C | 30.3°C | 27.5°C | 222 mm | 82% | 5.5 m/s | 4.2 |
| 2023 | 28.7°C | 28.4°C | 28.1°C | 29.3°C | 27.5°C | 192 mm | 81% | 4.8 m/s | 4.5 |
| 2022 | 28.3°C | 28.0°C | 27.6°C | 29.0°C | 26.2°C | 74 mm | 80% | 4.7 m/s | 4.7 |
| 2021 | 28.6°C | 28.3°C | 28.0°C | 29.1°C | 26.9°C | 90 mm | 79% | 4.5 m/s | 5 |
| 2020 | 29.2°C | 28.9°C | 28.6°C | 29.7°C | 27.6°C | 79 mm | 80% | 4.1 m/s | 4.8 |
| 2019 | 28.5°C | 28.2°C | 27.8°C | 29.2°C | 26.8°C | 214 mm | 80% | 3.6 m/s | 4.3 |
| 2018 | 28.6°C | 28.2°C | 27.9°C | 29.1°C | 27.1°C | 57 mm | 77% | 3.8 m/s | 4.7 |
| 2017 | 28.9°C | 28.6°C | 28.3°C | 29.2°C | 27.3°C | 280 mm | 81% | 5.4 m/s | 4 |
| 2016 | 28.3°C | 28.0°C | 27.7°C | 29.0°C | 27.0°C | 119 mm | 81% | 5 m/s | 4.4 |
| 2015 | 28.4°C | 28.1°C | 27.7°C | 29.3°C | 26.1°C | 140 mm | 81% | 4.7 m/s | 3.9 |
| 2014 | 28.4°C | 28.0°C | 27.7°C | 29.1°C | 26.8°C | 128 mm | 79% | 5 m/s | 4.3 |
| 2013 | 28.7°C | 28.5°C | 28.2°C | 29.3°C | 27.2°C | 131 mm | 80% | 5.6 m/s | 4.8 |
| 2012 | 28.1°C | 27.8°C | 27.4°C | 29.1°C | 25.6°C | 190 mm | 79% | 3.7 m/s | 4.5 |
| 2011 | 28.0°C | 27.6°C | 27.3°C | 28.7°C | 26.8°C | 16 mm | 78% | 3.9 m/s | 5 |
| 2010 | 29.0°C | 28.8°C | 28.5°C | 29.6°C | 27.7°C | 76 mm | 80% | 4.9 m/s | 4.8 |
| 2009 | 28.4°C | 28.1°C | 27.8°C | 29.1°C | 27.0°C | 172 mm | 81% | 4 m/s | 4.5 |
| 2008 | 28.1°C | 27.8°C | 27.5°C | 28.9°C | 26.7°C | 154 mm | 80% | 4.1 m/s | 4.5 |
| 2007 | 28.4°C | 28.1°C | 27.8°C | 29.7°C | 26.9°C | 252 mm | 81% | 4.6 m/s | 3.8 |
| 2006 | 28.2°C | 27.9°C | 27.6°C | 28.8°C | 26.7°C | 112 mm | 79% | 4.2 m/s | 4.6 |
| 2005 | 28.6°C | 28.3°C | 28.0°C | 29.4°C | 27.1°C | 69 mm | 76% | 5.9 m/s | 4.7 |
| 2004 | 28.6°C | 28.2°C | 27.9°C | 29.3°C | 27.1°C | 54 mm | 78% | 4.6 m/s | 4.9 |
| 2003 | 28.6°C | 28.3°C | 28.0°C | 29.7°C | 27.0°C | 192 mm | 81% | 5.5 m/s | 4.5 |
| 2002 | 28.6°C | 28.3°C | 28.0°C | 29.2°C | 26.8°C | 181 mm | 81% | 5.2 m/s | 4.4 |
| 2001 | 28.1°C | 27.8°C | 27.5°C | 28.9°C | 26.7°C | 86 mm | 80% | 5.2 m/s | 4.6 |
| 2000 | 28.0°C | 27.7°C | 27.4°C | 28.8°C | 26.0°C | 145 mm | 79% | 4.9 m/s | 4.6 |
| 1999 | 27.6°C | 27.3°C | 27.0°C | 28.8°C | 25.9°C | 176 mm | 80% | 4.7 m/s | 4.1 |
| 1998 | 27.0°C | 26.8°C | 26.5°C | 28.1°C | 25.4°C | 34 mm | 78% | 5.8 m/s | 4.9 |
| 1997 | 27.5°C | 27.2°C | 26.9°C | 28.4°C | 25.5°C | 53 mm | 76% | 5 m/s | 4.8 |
| 1996 | 27.6°C | 27.3°C | 27.0°C | 28.3°C | 26.1°C | 86 mm | 80% | 4.3 m/s | 4.7 |
| 1995 | 28.1°C | 27.7°C | 27.3°C | 28.9°C | 25.7°C | 161 mm | 80% | 3.9 m/s | 4.5 |
| 1994 | 27.9°C | 27.6°C | 27.3°C | 28.7°C | 26.7°C | 185 mm | 82% | 4.7 m/s | 4 |
| 1993 | 27.9°C | 27.7°C | 27.4°C | 29.1°C | 26.6°C | 193 mm | 81% | 6.8 m/s | 4 |
| 1992 | 28.4°C | 28.1°C | 27.8°C | 29.1°C | 27.1°C | 163 mm | 81% | 5.4 m/s | 4 |
| 1991 | 28.3°C | 27.9°C | 27.6°C | 29.2°C | 26.8°C | 185 mm | 79% | 4.1 m/s | 4.3 |
| 1990 | 27.7°C | 27.4°C | 27.2°C | 28.3°C | 25.9°C | 74 mm | 83% | 5.2 m/s | 4.8 |
| 1989 | 27.4°C | 27.1°C | 26.8°C | 28.1°C | 25.6°C | 96 mm | 82% | 4.4 m/s | 4.6 |
| 1988 | 28.2°C | 28.0°C | 27.7°C | 29.2°C | 26.8°C | 209 mm | 82% | 4.4 m/s | 4.3 |
| 1987 ❄️ | 26.6°C | 26.3°C | 26.0°C | 27.5°C | 24.7°C | 189 mm | 82% | 4.8 m/s | 4.6 |
| 1986 | 27.7°C | 27.4°C | 27.0°C | 29.0°C | 25.9°C | 249 mm | 80% | 4.9 m/s | 4 |
| 1985 | 27.4°C | 27.1°C | 26.8°C | 28.0°C | 25.8°C | 234 mm | 80% | 4.3 m/s | 4.1 |
| 1984 | 28.0°C | 27.7°C | 27.4°C | 28.7°C | 26.5°C | 80 mm | 81% | 5.8 m/s | 4.7 |
| 1983 | 27.7°C | 27.4°C | 27.1°C | 28.7°C | 26.4°C | 133 mm | 82% | 4.7 m/s | — |
| 1982 | 27.9°C | 27.6°C | 27.3°C | 28.8°C | 26.5°C | 233 mm | 82% | 4.3 m/s | — |
| 1981 | 27.7°C | 27.4°C | 27.2°C | 28.3°C | 26.6°C | 234 mm | 83% | 5.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 28.2°C with lows near 27.6°C (mean 27.9°C), based on 45 years of NASA POWER data.
May averages 149 mm of rainfall in Pago Pago, one of the drier months. The wettest on record was 319 mm in 2025.
The hottest May reached 30.3°C in 2024. The coldest dipped to 24.7°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.1°C. Daytime highs moved from 27.7°C to 28.8°C and overnight lows from 27.2°C to 28.2°C over the same span.
May is close to Pago Pago's year-round average and one of the drier months, so plan for around 28.2°C daytime highs and 27.6°C at night.
Not quite — May is the 8th coolest month in Pago Pago, averaging 27.9°C.
For May in Pago Pago, pack light layers you can adjust through the day, with typical highs of 28.2°C and lows of 27.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 80% — quite humid.
Average wind speed in May is 4.8 m/s. The windiest May on record averaged 6.8 m/s (1993).
The wettest May on record was 2025 with 319 mm. On average, May sees 149 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 Pago Pago behaves each May, 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 May specifically, along with year-by-year records and how the month has changed over the decades.
