October is close to Hagatna's year-round average, with average highs near 28.7°C and lows around 27.9°C (mean 28.3°C). It is a relatively wet time of year, averaging 216 mm of rainfall and 82% relative humidity across the period.
October is close to Hagatna's year-round average. Across 45 years of records, the warmest October in Hagatna was 2023 — when the month averaged 28.8°C — while the coldest was 1982 at 27.4°C. Typical October days reach 28.7°C with nights near 27.9°C. The long-term trend is warming, about 0.2°C per decade.
October is a relatively wet time of year in Hagatna, averaging 216 mm of rainfall. The wettest October on record was 2013 with 459 mm, while the driest was 2002 at 92 mm.
Relative humidity in Hagatna during October averages 82%. The most humid October was 2003 at 84%, and the least humid was 1997 at 78%.
October receives about 5 kWh/m²/day of solar energy in Hagatna. The sunniest October was 2002 at 5.8 kWh/m²/day, and the cloudiest was 2006 at 3.9.
Average wind speed in Hagatna during October is 4.7 m/s. The windiest October was 2006 at 5.8 m/s, while the calmest was 2021 at 3.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.0°C | 28.2°C | 28.4°C | 28.4°C | 28.6°C | +0.6°C |
| Avg High | 28.4°C | 28.5°C | 28.7°C | 28.8°C | 29.0°C | +0.6°C |
| Avg Low | 27.6°C | 27.8°C | 28.0°C | 28.0°C | 28.1°C | +0.5°C |
| Avg Rain | 219 mm | 164 mm | 198 mm | 257 mm | 262 mm | +43 mm |
October temperatures in Hagatna have risen by about 0.5°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 25.8°C (1985) to a record high of 30.2°C (2015).
Rainfall in October is a relatively wet time of year, averaging 216 mm, with a wettest year of 459 mm.
A quieter season to visit Hagatna
If your dates are flexible, the more temperate months of March and February tend to be the most comfortable for visiting Hagatna. That said, October — with days averaging 28.7°C and nights around 27.9°C (mean 28.3°C) and higher rainfall (216 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 29.0°C | 28.6°C | 28.2°C | 29.8°C | 27.4°C | 224 mm | 83% | 4.1 m/s | 5 |
| 2024 | 29.1°C | 28.6°C | 28.2°C | 29.7°C | 26.9°C | 294 mm | 83% | 4.1 m/s | 4.8 |
| 2023 🔥 | 29.2°C | 28.8°C | 28.4°C | 30.0°C | 27.6°C | 205 mm | 83% | 4.8 m/s | 5.2 |
| 2022 | 28.7°C | 28.3°C | 27.9°C | 29.8°C | 27.4°C | 275 mm | 83% | 4 m/s | 4.6 |
| 2021 | 28.8°C | 28.4°C | 27.9°C | 29.6°C | 27.2°C | 338 mm | 82% | 3.6 m/s | 4.5 |
| 2020 | 29.1°C | 28.7°C | 28.2°C | 30.0°C | 26.9°C | 234 mm | 82% | 4 m/s | 4.9 |
| 2019 | 28.9°C | 28.5°C | 28.1°C | 29.4°C | 27.3°C | 190 mm | 81% | 4 m/s | 5.1 |
| 2018 | 28.7°C | 28.3°C | 27.9°C | 29.4°C | 26.8°C | 135 mm | 83% | 4.4 m/s | 5.5 |
| 2017 | 29.0°C | 28.6°C | 28.2°C | 29.7°C | 26.4°C | 289 mm | 82% | 4.4 m/s | 4.4 |
| 2016 | 29.1°C | 28.7°C | 28.3°C | 29.7°C | 27.1°C | 202 mm | 83% | 4.6 m/s | 5.3 |
| 2015 | 28.9°C | 28.5°C | 28.1°C | 30.2°C | 27.2°C | 169 mm | 81% | 4.8 m/s | 5 |
| 2014 | 28.6°C | 28.2°C | 27.7°C | 29.3°C | 27.1°C | 311 mm | 83% | 3.9 m/s | 4.7 |
| 2013 🌧️ | 28.9°C | 28.5°C | 28.1°C | 29.4°C | 27.3°C | 459 mm | 83% | 5.5 m/s | 4.5 |
| 2012 | 28.8°C | 28.3°C | 27.9°C | 29.6°C | 26.7°C | 280 mm | 82% | 5 m/s | 4.6 |
| 2011 | 28.5°C | 28.1°C | 27.8°C | 29.1°C | 26.9°C | 293 mm | 81% | 4.6 m/s | 4.7 |
| 2010 | 28.7°C | 28.3°C | 28.0°C | 29.2°C | 27.0°C | 242 mm | 82% | 4.4 m/s | 5.1 |
| 2009 | 28.9°C | 28.5°C | 28.1°C | 29.7°C | 27.0°C | 210 mm | 83% | 5.5 m/s | 5 |
| 2008 | 28.8°C | 28.5°C | 28.2°C | 29.7°C | 27.3°C | 121 mm | 82% | 4.9 m/s | 5.7 |
| 2007 | 28.5°C | 28.1°C | 27.6°C | 29.2°C | 26.7°C | 282 mm | 83% | 4.1 m/s | 4.7 |
| 2006 | 28.6°C | 28.2°C | 27.9°C | 29.9°C | 26.5°C | 402 mm | 83% | 5.8 m/s | 3.9 |
| 2005 | 28.6°C | 28.2°C | 27.9°C | 29.2°C | 26.9°C | 192 mm | 83% | 4.4 m/s | 5 |
| 2004 | 28.6°C | 28.3°C | 28.0°C | 29.5°C | 27.1°C | 189 mm | 83% | 4.9 m/s | 5.2 |
| 2003 | 28.9°C | 28.6°C | 28.3°C | 29.9°C | 26.8°C | 224 mm | 84% | 4.4 m/s | 4.8 |
| 2002 | 28.9°C | 28.6°C | 28.3°C | 29.9°C | 27.2°C | 92 mm | 80% | 5 m/s | 5.8 |
| 2001 | 28.8°C | 28.4°C | 28.0°C | 29.5°C | 26.9°C | 109 mm | 80% | 4.6 m/s | 5.7 |
| 2000 | 28.7°C | 28.3°C | 27.9°C | 29.4°C | 26.6°C | 162 mm | 82% | 5 m/s | 5.3 |
| 1999 | 28.9°C | 28.5°C | 28.1°C | 29.6°C | 27.5°C | 162 mm | 81% | 5 m/s | 5.4 |
| 1998 | 28.9°C | 28.5°C | 28.1°C | 30.0°C | 27.0°C | 175 mm | 82% | 5.3 m/s | 5.4 |
| 1997 | 28.9°C | 28.5°C | 28.1°C | 29.7°C | 27.0°C | 125 mm | 78% | 4.8 m/s | 5.3 |
| 1996 | 28.8°C | 28.4°C | 28.0°C | 29.7°C | 27.4°C | 122 mm | 82% | 4.1 m/s | 5.1 |
| 1995 | 28.6°C | 28.2°C | 27.9°C | 29.4°C | 26.8°C | 196 mm | 83% | 5.1 m/s | 4.8 |
| 1994 | 28.3°C | 27.9°C | 27.5°C | 28.9°C | 26.6°C | 234 mm | 82% | 4.7 m/s | 5.2 |
| 1993 | 28.1°C | 27.8°C | 27.4°C | 28.8°C | 25.9°C | 122 mm | 82% | 4.5 m/s | 5.3 |
| 1992 | 28.4°C | 28.1°C | 27.7°C | 29.2°C | 26.8°C | 131 mm | 81% | 4 m/s | 5.2 |
| 1991 | 28.1°C | 27.7°C | 27.4°C | 28.6°C | 26.1°C | 227 mm | 82% | 5.3 m/s | 5 |
| 1990 | 28.4°C | 28.1°C | 27.7°C | 29.3°C | 26.6°C | 141 mm | 82% | 4.2 m/s | 5.3 |
| 1989 | 28.2°C | 27.8°C | 27.4°C | 28.9°C | 26.6°C | 171 mm | 83% | 4.9 m/s | 5.1 |
| 1988 | 28.3°C | 27.9°C | 27.5°C | 29.3°C | 26.7°C | 187 mm | 83% | 4.2 m/s | 4.7 |
| 1987 | 28.7°C | 28.3°C | 27.9°C | 29.8°C | 27.0°C | 251 mm | 81% | 5 m/s | 5.1 |
| 1986 | 28.4°C | 28.0°C | 27.6°C | 29.4°C | 26.7°C | 112 mm | 81% | 5.3 m/s | 5.5 |
| 1985 | 28.1°C | 27.7°C | 27.3°C | 29.2°C | 25.8°C | 101 mm | 81% | 4.8 m/s | 5.4 |
| 1984 | 28.3°C | 27.9°C | 27.5°C | 29.1°C | 26.6°C | 263 mm | 82% | 4.4 m/s | 5.1 |
| 1983 | 28.6°C | 28.2°C | 27.9°C | 29.0°C | 27.2°C | 283 mm | 81% | 4.5 m/s | — |
| 1982 ❄️ | 27.8°C | 27.4°C | 26.9°C | 28.7°C | 26.1°C | 398 mm | 81% | 4.9 m/s | — |
| 1981 | 29.0°C | 28.6°C | 28.3°C | 29.8°C | 27.4°C | 206 mm | 81% | 5.7 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 28.7°C with lows near 27.9°C (mean 28.3°C), based on 45 years of NASA POWER data.
October averages 216 mm of rainfall in Hagatna, a relatively wet time of year. The wettest on record was 459 mm in 2013.
The hottest October reached 30.2°C in 2015. The coldest dipped to 25.8°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 0.5°C. Daytime highs moved from 28.4°C to 29°C and overnight lows from 27.6°C to 28.1°C over the same span.
October is close to Hagatna's year-round average and a relatively wet time of year, so plan for around 28.7°C daytime highs and 27.9°C at night.
Not quite — October is the 10th coolest month in Hagatna, averaging 28.3°C.
For October in Hagatna, pack light layers you can adjust through the day, with typical highs of 28.7°C and lows of 27.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 82% — quite humid.
Average wind speed in October is 4.7 m/s. The windiest October on record averaged 5.8 m/s (2006).
The wettest October on record was 2013 with 459 mm. On average, October sees 216 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 Hagatna behaves each October, 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 October specifically, along with year-by-year records and how the month has changed over the decades.
