July 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 188 mm of rainfall and 82% relative humidity across the period.
July is close to Hagatna's year-round average. Across 45 years of records, the warmest July in Hagatna was 2024 — when the month averaged 29°C — while the coldest was 1982 at 27.6°C. Typical July days reach 28.7°C with nights near 27.9°C. The long-term trend is warming, about 0.2°C per decade.
July is a relatively wet time of year in Hagatna, averaging 188 mm of rainfall. The wettest July on record was 2014 with 398 mm, while the driest was 2020 at 78 mm.
Relative humidity in Hagatna during July averages 82%. The most humid July was 2018 at 85%, and the least humid was 1984 at 78%.
July receives about 5.6 kWh/m²/day of solar energy in Hagatna. The sunniest July was 2013 at 6.4 kWh/m²/day, and the cloudiest were 2014 and 2025 at 4.6.
Average wind speed in Hagatna during July is 4.3 m/s. The windiest July was 2002 at 6 m/s, while the calmest was 1984 at 3.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.9°C | 28.1°C | 28.2°C | 28.7°C | 28.6°C | +0.7°C |
| Avg High | 28.3°C | 28.5°C | 28.6°C | 29.1°C | 29.1°C | +0.8°C |
| Avg Low | 27.5°C | 27.7°C | 27.8°C | 28.2°C | 28.2°C | +0.7°C |
| Avg Rain | 194 mm | 151 mm | 202 mm | 198 mm | 201 mm | +8 mm |
July temperatures in Hagatna have risen by about 0.7°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 25.9°C (1993) to a record high of 30.3°C (2014).
Rainfall in July is a relatively wet time of year, averaging 188 mm, with a wettest year of 398 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, July — with days averaging 28.7°C and nights around 27.9°C (mean 28.3°C) and higher rainfall (188 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 | 28.9°C | 28.5°C | 28.1°C | 29.5°C | 27.2°C | 353 mm | 82% | 3.7 m/s | 4.6 |
| 2024 🔥 | 29.4°C | 29.0°C | 28.6°C | 30.1°C | 27.6°C | 136 mm | 81% | 4.4 m/s | 5.9 |
| 2023 | 29.2°C | 28.7°C | 28.2°C | 30.0°C | 27.4°C | 242 mm | 82% | 4.5 m/s | 5.4 |
| 2022 | 28.8°C | 28.3°C | 27.8°C | 29.6°C | 27.0°C | 189 mm | 83% | 3.7 m/s | 5.1 |
| 2021 | 29.0°C | 28.6°C | 28.2°C | 30.1°C | 27.3°C | 211 mm | 81% | 3.9 m/s | 5.5 |
| 2020 | 29.1°C | 28.7°C | 28.3°C | 29.8°C | 27.4°C | 78 mm | 81% | 4.6 m/s | 6.2 |
| 2019 | 29.3°C | 28.9°C | 28.5°C | 30.0°C | 27.8°C | 122 mm | 81% | 3.2 m/s | 6 |
| 2018 | 28.8°C | 28.4°C | 28.0°C | 29.7°C | 27.4°C | 308 mm | 85% | 5 m/s | 5.1 |
| 2017 | 29.3°C | 28.9°C | 28.5°C | 30.0°C | 27.7°C | 82 mm | 81% | 4.1 m/s | 5.9 |
| 2016 | 29.3°C | 28.9°C | 28.5°C | 30.2°C | 27.5°C | 91 mm | 79% | 3.3 m/s | 6.3 |
| 2015 | 28.8°C | 28.4°C | 27.9°C | 29.5°C | 26.9°C | 223 mm | 81% | 3.9 m/s | 5.8 |
| 2014 🌧️ | 29.3°C | 28.8°C | 28.3°C | 30.3°C | 27.1°C | 398 mm | 82% | 4.6 m/s | 4.6 |
| 2013 | 29.2°C | 28.7°C | 28.2°C | 30.0°C | 27.5°C | 82 mm | 81% | 3.7 m/s | 6.4 |
| 2012 | 28.7°C | 28.3°C | 27.8°C | 29.6°C | 26.7°C | 230 mm | 81% | 3.4 m/s | 5.5 |
| 2011 | 28.9°C | 28.5°C | 28.0°C | 29.6°C | 27.0°C | 296 mm | 81% | 4.7 m/s | 5.2 |
| 2010 | 29.2°C | 28.8°C | 28.4°C | 29.9°C | 27.4°C | 152 mm | 81% | 5 m/s | 6 |
| 2009 | 29.1°C | 28.7°C | 28.3°C | 30.0°C | 27.5°C | 227 mm | 81% | 4.5 m/s | 5.4 |
| 2008 | 28.5°C | 28.1°C | 27.7°C | 29.7°C | 26.1°C | 179 mm | 82% | 3.9 m/s | 5.6 |
| 2007 | 29.1°C | 28.7°C | 28.3°C | 29.9°C | 27.1°C | 145 mm | 80% | 4 m/s | 6.2 |
| 2006 | 28.4°C | 28.0°C | 27.6°C | 29.4°C | 26.4°C | 310 mm | 84% | 5.1 m/s | 4.9 |
| 2005 | 28.9°C | 28.5°C | 28.1°C | 29.5°C | 27.4°C | 160 mm | 82% | 4.6 m/s | 5.6 |
| 2004 | 28.2°C | 27.9°C | 27.6°C | 29.1°C | 26.8°C | 155 mm | 84% | 3.5 m/s | 6 |
| 2003 | 28.6°C | 28.2°C | 27.9°C | 29.4°C | 27.2°C | 121 mm | 83% | 4.5 m/s | 5.7 |
| 2002 | 28.5°C | 28.1°C | 27.7°C | 29.0°C | 26.7°C | 362 mm | 84% | 6 m/s | 4.7 |
| 2001 | 28.4°C | 28.0°C | 27.7°C | 29.2°C | 27.1°C | 219 mm | 84% | 4.3 m/s | 5.4 |
| 2000 | 28.3°C | 27.9°C | 27.5°C | 29.1°C | 26.4°C | 139 mm | 82% | 3.8 m/s | 5.8 |
| 1999 | 28.3°C | 27.9°C | 27.5°C | 29.1°C | 26.7°C | 260 mm | 83% | 4.2 m/s | 5.4 |
| 1998 | 28.7°C | 28.3°C | 28.0°C | 29.3°C | 27.2°C | 104 mm | 82% | 4.2 m/s | 6.1 |
| 1997 | 28.9°C | 28.5°C | 28.0°C | 29.7°C | 27.3°C | 170 mm | 84% | 4.7 m/s | 5.8 |
| 1996 | 28.6°C | 28.2°C | 27.7°C | 29.7°C | 26.8°C | 207 mm | 82% | 4.2 m/s | 5.6 |
| 1995 | 28.6°C | 28.2°C | 27.9°C | 29.3°C | 26.9°C | 97 mm | 81% | 5 m/s | 5.8 |
| 1994 | 28.4°C | 28.0°C | 27.6°C | 29.8°C | 26.6°C | 209 mm | 82% | 3.6 m/s | 5.5 |
| 1993 | 28.5°C | 28.0°C | 27.6°C | 29.3°C | 25.9°C | 132 mm | 82% | 4.7 m/s | 5.7 |
| 1992 | 28.1°C | 27.7°C | 27.3°C | 28.5°C | 26.6°C | 84 mm | 83% | 4.8 m/s | 6.1 |
| 1991 | 28.2°C | 27.8°C | 27.4°C | 29.1°C | 26.6°C | 129 mm | 82% | 4 m/s | 5.7 |
| 1990 | 28.5°C | 28.1°C | 27.6°C | 29.1°C | 26.4°C | 114 mm | 81% | 3.3 m/s | 5.8 |
| 1989 | 28.3°C | 27.9°C | 27.4°C | 29.3°C | 26.4°C | 181 mm | 81% | 4 m/s | 5.4 |
| 1988 | 28.5°C | 28.0°C | 27.6°C | 29.8°C | 26.2°C | 150 mm | 82% | 4.7 m/s | 5.2 |
| 1987 | 28.5°C | 28.0°C | 27.5°C | 29.6°C | 26.6°C | 152 mm | 81% | 4.6 m/s | 5.6 |
| 1986 | 28.1°C | 27.7°C | 27.2°C | 28.8°C | 26.4°C | 195 mm | 81% | 3.4 m/s | 5.7 |
| 1985 | 28.2°C | 27.8°C | 27.4°C | 29.0°C | 26.4°C | 219 mm | 79% | 4.3 m/s | 5.5 |
| 1984 | 28.5°C | 28.1°C | 27.7°C | 29.3°C | 26.9°C | 140 mm | 78% | 3.1 m/s | 5.4 |
| 1983 | 28.3°C | 27.9°C | 27.5°C | 28.9°C | 27.0°C | 129 mm | 82% | 4.7 m/s | — |
| 1982 ❄️ | 28.0°C | 27.6°C | 27.3°C | 28.7°C | 26.1°C | 339 mm | 83% | 5.7 m/s | — |
| 1981 | 28.6°C | 28.2°C | 27.8°C | 29.1°C | 27.0°C | 241 mm | 80% | 4.3 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 28.7°C with lows near 27.9°C (mean 28.3°C), based on 45 years of NASA POWER data.
July averages 188 mm of rainfall in Hagatna, a relatively wet time of year. The wettest on record was 398 mm in 2014.
The hottest July reached 30.3°C in 2014. The coldest dipped to 25.9°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.7°C. Daytime highs moved from 28.3°C to 29.1°C and overnight lows from 27.5°C to 28.2°C over the same span.
July 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 — July is the 9th coolest month in Hagatna, averaging 28.3°C.
For July 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 July averages 82% — quite humid.
Average wind speed in July is 4.3 m/s. The windiest July on record averaged 6 m/s (2002).
The wettest July on record was 2014 with 398 mm. On average, July sees 188 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 July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
