Agat Weather in July (1981–2025)

📍 13.36°N, 144.66°E •
📊

July at a Glance in Agat

(1981–2025)
Avg High
🔥
28.7°C
Avg Low
❄️
27.9°C
Avg Temp
🌡️
28.3°C
Avg Rain
🌧️
197 mm
Avg Humidity
💧
81%
Avg Wind
🌬️
4.2 m/s
Avg Solar
☀️
5.6
kWh/m²/day
vs Annual
📈
+0.3°C
temp difference
🌡️Warm afternoons🌙Warm mornings☀️Very sunny🌧️Wet month💨Breezy💦Humid air

Agat July Weather Overview

July is close to Agat'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 197 mm of rainfall and 81% relative humidity across the period.

Agat July Temperature History (1981–2025)

Range

July is close to Agat's year-round average. Across 45 years of records, the warmest July in Agat was 2024 — when the month averaged 29.1°C — while the coldest was 1986 at 27.7°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.

1981–1985 vs 2021–2025

Avg Temp28.0°C→28.7°C+0.7°C
Max Temp28.4°C→29.1°C+0.7°C
Min Temp27.6°C→28.3°C+0.7°C

Trend (per decade)

Avg Temp+0.2°C/decade ↗
Max Temp+0.2°C/decade ↗
Min Temp+0.2°C/decade ↗

Distribution of Avg Temp

27.0°C–27.8°C1 yr (2%)
27.8°C–28.5°C27 yr (60%)
28.5°C–29.3°C17 yr (38%)
29.3°C–30.0°C0 yr (0%)

Agat July Rainfall History (1981–2025)

Range

July is a relatively wet time of year in Agat, averaging 197 mm of rainfall. The wettest July on record was 2002 with 427 mm, while the driest was 2020 at 79 mm.

Agat July Humidity History (1981–2025)

Range

Relative humidity in Agat during July averages 81%. The most humid July was 2018 at 85%, and the least humid was 1984 at 77%.

Agat July Solar History (1981–2025)

Range

July receives about 5.6 kWh/m²/day of solar energy in Agat. The sunniest July was 2013 at 6.4 kWh/m²/day, and the cloudiest were 2014 and 2025 at 4.6.

Agat July Wind History (1981–2025)

Range

Average wind speed in Agat during July is 4.2 m/s. The windiest July was 2002 at 6 m/s, while the calmest was 1984 at 2.9 m/s.

What July Feels Like in Agat

🌅
Warm
Morning
🌞
Warm
Afternoon
🌆
Warm
Evening
Rain chanceHigh
Outdoor comfort★★★☆☆

How July Ranks in Agat

🔥4th warmest month of the year
🌧️4th wettest month of the year
☀️5th sunniest month of the year

Ranked against the other 11 months using 1981–2025 averages.

Explore Agat Weather by Month

Agat July Averages by Decade

Metric1980s1990s2000s2010s2020sChange
Avg Temp28.0°C28.2°C28.3°C28.7°C28.7°C+0.7°C
Avg High28.4°C28.5°C28.6°C29.1°C29.1°C+0.7°C
Avg Low27.6°C27.7°C27.9°C28.3°C28.3°C+0.7°C
Avg Rain189 mm150 mm224 mm214 mm216 mm+27 mm

Extreme July Records in Agat

🔥Warmest July30.4°C2016
🧊Coldest July26.0°C2002
🌧️Wettest July427 mm2002
🏜️Driest July79 mm2020
🌬️Windiest July6 m/s2002

Key Insights for July

✅

July temperatures in Agat have risen by about 0.7°C between 1981–1985 and 2021–2025.

✅

July has ranged from a record low of 26°C (2002) to a record high of 30.4°C (2016).

✅

Rainfall in July is a relatively wet time of year, averaging 197 mm, with a wettest year of 427 mm.

Is July a Good Time to Visit Agat?

A quieter season to visit Agat

If your dates are flexible, the more temperate months of March and February tend to be the most comfortable for visiting Agat. That said, July — with days averaging 28.7°C and nights around 27.9°C (mean 28.3°C) and higher rainfall (197 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.

See Agat's complete weather history All 12 months side by side, 1981–2025 records, annual trends and long-term averages in one place. View full history →

Agat Weather in July — In Depth

☀️ July climate overview

July is close to Agat'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 197 mm of rainfall and 81% relative humidity across the period.

🌧️ Rain, humidity & wind in July

July averages 197 mm of rainfall in Agat, a relatively wet time of year compared with the rest of the year. The wettest July on record saw 427 mm (2002), and the driest just 79 mm (2020). Humidity sits around 81% and average wind speed is 4.2 m/s, with solar radiation averaging 5.6 kWh/m²/day.

📈 How July has changed

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 28.4°C to 29.1°C and overnight lows from 27.6°C to 28.3°C over the same span.
July Weather in Agat, Year by Year
🔥 warmest❄️ coldest🌧️ wettest
YearAvg HighAvg TempAvg LowHottest DayColdest DayRainfallHumidityWindSolar
202528.9°C28.5°C28.1°C29.6°C27.3°C409 mm82%3.7 m/s4.6
2024 🔥29.6°C29.1°C28.7°C30.3°C27.6°C126 mm81%4.3 m/s5.9
202329.2°C28.8°C28.3°C30.0°C27.4°C281 mm82%4.4 m/s5.4
202228.9°C28.4°C27.9°C29.8°C27.0°C199 mm83%3.4 m/s5.1
202129.1°C28.7°C28.3°C29.9°C27.5°C203 mm81%3.7 m/s5.5
202029.1°C28.8°C28.4°C29.8°C27.5°C79 mm81%4.4 m/s6.2
201929.4°C29.0°C28.5°C30.1°C27.9°C136 mm80%3.1 m/s6
201828.8°C28.4°C28.1°C29.6°C27.2°C330 mm85%4.9 m/s5.1
201729.4°C29.0°C28.6°C30.1°C27.4°C90 mm80%4 m/s5.9
201629.4°C29.0°C28.6°C30.4°C27.7°C92 mm78%3.1 m/s6.3
201528.7°C28.3°C27.9°C29.7°C27.3°C230 mm81%3.9 m/s5.8
201429.3°C28.8°C28.2°C30.3°C27.1°C406 mm82%4.6 m/s4.6
201329.3°C28.8°C28.4°C30.1°C27.5°C100 mm80%3.6 m/s6.4
201228.8°C28.4°C27.9°C29.7°C26.8°C272 mm81%3.3 m/s5.5
201129.0°C28.5°C28.1°C29.6°C27.0°C303 mm81%4.7 m/s5.2
201029.2°C28.9°C28.5°C30.0°C27.0°C184 mm81%4.9 m/s6
200929.2°C28.8°C28.4°C30.1°C27.6°C239 mm81%4.6 m/s5.4
200828.5°C28.2°C27.8°C29.6°C26.3°C205 mm82%3.8 m/s5.6
200729.1°C28.7°C28.3°C30.1°C26.8°C156 mm80%4 m/s6.2
200628.5°C28.1°C27.7°C29.5°C26.3°C358 mm83%5 m/s4.9
200528.9°C28.6°C28.2°C29.6°C27.1°C201 mm82%4.6 m/s5.6
200428.3°C28.0°C27.7°C29.3°C26.7°C158 mm83%3.5 m/s6
200328.6°C28.3°C27.9°C29.5°C26.9°C125 mm83%4.3 m/s5.7
2002 🌧️28.5°C28.1°C27.7°C29.4°C26.0°C427 mm84%6 m/s4.7
200128.4°C28.0°C27.6°C29.3°C26.9°C240 mm84%4.4 m/s5.4
200028.3°C27.9°C27.5°C29.2°C26.5°C136 mm82%3.7 m/s5.8
199928.3°C27.9°C27.5°C29.4°C26.5°C255 mm82%4.1 m/s5.4
199828.8°C28.5°C28.1°C29.5°C27.4°C124 mm81%4 m/s6.1
199729.0°C28.6°C28.1°C29.7°C27.3°C189 mm83%4.8 m/s5.8
199628.7°C28.3°C27.9°C29.9°C26.9°C147 mm82%4 m/s5.6
199528.7°C28.3°C27.9°C29.5°C26.7°C109 mm81%4.8 m/s5.8
199428.4°C28.1°C27.7°C29.4°C26.8°C238 mm82%3.5 m/s5.5
199328.5°C28.1°C27.7°C29.2°C26.2°C134 mm81%4.6 m/s5.7
199228.2°C27.8°C27.4°C28.7°C26.5°C82 mm82%4.7 m/s6.1
199128.3°C27.9°C27.5°C28.9°C26.1°C117 mm82%3.9 m/s5.7
199028.4°C28.0°C27.6°C28.9°C26.3°C103 mm82%3.2 m/s5.8
198928.5°C28.0°C27.5°C29.5°C26.3°C169 mm81%4.1 m/s5.4
198828.5°C28.1°C27.7°C29.7°C26.2°C142 mm81%4.6 m/s5.2
198728.5°C28.0°C27.5°C29.7°C26.5°C152 mm81%4.4 m/s5.6
1986 ❄️28.1°C27.7°C27.3°C28.6°C26.3°C145 mm81%3.5 m/s5.7
198528.2°C27.8°C27.4°C28.8°C26.4°C217 mm80%4.3 m/s5.5
198428.5°C28.2°C27.8°C29.4°C27.0°C132 mm77%2.9 m/s5.4
198328.4°C28.0°C27.7°C29.0°C26.9°C151 mm81%4.6 m/s—
198228.1°C27.8°C27.4°C28.9°C26.7°C363 mm82%5.6 m/s—
198128.7°C28.2°C27.8°C29.2°C26.7°C232 mm80%4.2 m/s—

Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.

Other Cities in Guam

Agat July Weather — FAQ

What is the average temperature in Agat in July?▼

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.

Does it rain a lot in Agat in July?▼

July averages 197 mm of rainfall in Agat, a relatively wet time of year. The wettest on record was 427 mm in 2002.

What was the hottest July on record in Agat?▼

The hottest July reached 30.4°C in 2016. The coldest dipped to 26°C in 2002.

Has July in Agat gotten warmer over time?▼

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 28.4°C to 29.1°C and overnight lows from 27.6°C to 28.3°C over the same span.

Is July a good time to visit Agat?▼

July is close to Agat'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.

Is July the coldest month in Agat?▼

Not quite — July is the 9th coolest month in Agat, averaging 28.3°C.

What should I pack for Agat in July?▼

For July in Agat, 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.

Is Agat humid in July?▼

Relative humidity in July averages 81% — quite humid.

How windy is Agat in July?▼

Average wind speed in July is 4.2 m/s. The windiest July on record averaged 6 m/s (2002).

Which July had the most rainfall in Agat?▼

The wettest July on record was 2002 with 427 mm. On average, July sees 197 mm.

Where does this July weather data come from?▼

All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.

Other Guam cities

Explore how the weather in Agat 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.