Agat Weather in March (1981–2025)

📍 13.36°N, 144.66°E •
📊

March at a Glance in Agat

(1981–2025)
Avg High
🔥
27.7°C
Avg Low
❄️
26.8°C
Avg Temp
🌡️
27.3°C
Avg Rain
🌧️
39 mm
Avg Humidity
💧
77%
Avg Wind
🌬️
6.2 m/s
Avg Solar
☀️
6.2
kWh/m²/day
vs Annual
📈
-0.7°C
temp difference
🌡️Warm afternoons🌙Warm mornings☀️Very sunny🌦️Some rain🌬️Windy💦Humid air

Agat March Weather Overview

March is one of the cooler months of the year in Agat, with average highs near 27.7°C and lows around 26.8°C (mean 27.3°C). It is one of the drier months, averaging 39 mm of rainfall and 77% relative humidity across the period.

Agat March Temperature History (1981–2025)

Range

March is one of the cooler months of the year in Agat. Across 45 years of records, the warmest March in Agat was 2025 — when the month averaged 28.1°C — while the coldest was 1983 at 25.8°C. Typical March days reach 27.7°C with nights near 26.8°C. The long-term trend is warming, about 0.3°C per decade.

1981–1985 vs 2021–2025

Avg Temp26.7°C→27.9°C+1.2°C
Max Temp27.1°C→28.3°C+1.2°C
Min Temp26.3°C→27.4°C+1.1°C

Trend (per decade)

Avg Temp+0.3°C/decade ↗
Max Temp+0.3°C/decade ↗
Min Temp+0.2°C/decade ↗

Distribution of Avg Temp

25.0°C–26.0°C1 yr (2%)
26.0°C–27.0°C11 yr (24%)
27.0°C–28.0°C30 yr (67%)
28.0°C–29.0°C3 yr (7%)

Agat March Rainfall History (1981–2025)

Range

March is one of the drier months in Agat, averaging 39 mm of rainfall. The wettest March on record was 2017 with 118 mm, while the driest was 1987 at 2 mm.

Agat March Humidity History (1981–2025)

Range

Relative humidity in Agat during March averages 77%. The most humid March was 1986 at 81%, and the least humid was 1998 at 69%.

Agat March Solar History (1981–2025)

Range

March receives about 6.2 kWh/m²/day of solar energy in Agat. The sunniest March was 2021 at 6.7 kWh/m²/day, and the cloudiest was 2007 at 5.5.

Agat March Wind History (1981–2025)

Range

Average wind speed in Agat during March is 6.2 m/s. The windiest March was 1985 at 7.4 m/s, while the calmest was 1989 at 4.3 m/s.

What March Feels Like in Agat

🌅
Warm
Morning
🌞
Warm
Afternoon
🌆
Warm
Evening
Rain chanceLow
Outdoor comfort★★★★★

How March Ranks in Agat

🥶2nd coolest month of the year
🌵1st driest month of the year
☀️4th sunniest month of the year

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

Explore Agat Weather by Month

Agat March Averages by Decade

Metric1980s1990s2000s2010s2020sChange
Avg Temp26.9°C26.8°C27.5°C27.4°C27.7°C+0.8°C
Avg High27.3°C27.3°C27.9°C27.9°C28.2°C+0.9°C
Avg Low26.4°C26.4°C27.0°C27.0°C27.2°C+0.8°C
Avg Rain38 mm25 mm39 mm57 mm33 mm-4 mm

Extreme March Records in Agat

🔥Warmest March29.0°C1999
🧊Coldest March24.1°C1983
🌧️Wettest March118 mm2017
🏜️Driest March2 mm1987
🌬️Windiest March7.4 m/s1985

Key Insights for March

✅

March temperatures in Agat have risen by about 1.2°C between 1981–1985 and 2021–2025.

✅

March has ranged from a record low of 24.1°C (1983) to a record high of 29°C (1999).

✅

Rainfall in March is one of the drier months, averaging 39 mm, with a wettest year of 118 mm.

Is March a Good Time to Visit Agat?

One of the best times to visit Agat

March is one of the best times to visit Agat. Expect days averaging 27.7°C and nights around 26.8°C (mean 27.3°C) — close to Agat's yearly average — with moderate rainfall (39 mm), so conditions are generally comfortable for sightseeing and outdoor plans.

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 March — In Depth

☀️ March climate overview

March is one of the cooler months of the year in Agat, with average highs near 27.7°C and lows around 26.8°C (mean 27.3°C). It is one of the drier months, averaging 39 mm of rainfall and 77% relative humidity across the period.

🌧️ Rain, humidity & wind in March

March averages 39 mm of rainfall in Agat, one of the drier months compared with the rest of the year. The wettest March on record saw 118 mm (2017), and the driest just 2 mm (1987). Humidity sits around 77% and average wind speed is 6.2 m/s, with solar radiation averaging 6.2 kWh/m²/day.

📈 How March has changed

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 1.2°C. Daytime highs moved from 27.1°C to 28.3°C and overnight lows from 26.3°C to 27.4°C over the same span.
March Weather in Agat, Year by Year
🔥 warmest❄️ coldest🌧️ wettest
YearAvg HighAvg TempAvg LowHottest DayColdest DayRainfallHumidityWindSolar
2025 🔥28.6°C28.1°C27.6°C29.0°C27.0°C52 mm78%6 m/s6.5
202428.0°C27.5°C27.0°C28.7°C25.9°C25 mm78%6 m/s6.5
202328.2°C27.8°C27.3°C29.0°C26.6°C47 mm79%5.2 m/s6.2
202228.5°C28.0°C27.5°C28.9°C26.8°C28 mm79%5.8 m/s6.5
202128.4°C27.9°C27.4°C28.8°C26.9°C27 mm78%5.6 m/s6.7
202027.7°C27.2°C26.7°C28.2°C25.8°C19 mm79%6 m/s6.6
201927.7°C27.2°C26.8°C28.4°C25.9°C25 mm78%6 m/s6.6
201828.2°C27.7°C27.2°C28.9°C25.8°C34 mm77%6.1 m/s6.5
2017 🌧️28.3°C27.8°C27.4°C28.8°C26.8°C118 mm78%5 m/s5.9
201627.5°C27.0°C26.5°C28.3°C25.9°C16 mm77%4.6 m/s6.6
201527.7°C27.2°C26.8°C28.5°C26.1°C111 mm78%6 m/s5.9
201427.9°C27.5°C27.1°C28.5°C26.0°C66 mm79%6.4 m/s6.2
201328.1°C27.6°C27.2°C28.8°C26.4°C57 mm79%6.1 m/s6.1
201228.0°C27.5°C27.1°C28.5°C26.1°C35 mm77%7.1 m/s6.2
201128.1°C27.7°C27.3°C28.5°C26.3°C65 mm81%6.1 m/s6.1
201027.6°C27.2°C26.8°C28.1°C26.2°C38 mm79%7 m/s6.3
200927.7°C27.3°C26.8°C28.5°C25.9°C36 mm76%5.7 m/s6.2
200828.0°C27.6°C27.1°C28.4°C26.4°C34 mm76%5.3 m/s6.6
200727.3°C26.9°C26.5°C28.3°C25.7°C44 mm78%6.8 m/s5.5
200628.0°C27.5°C27.1°C28.8°C26.3°C24 mm74%6.2 m/s6.3
200528.0°C27.6°C27.2°C28.9°C26.7°C66 mm77%6.7 m/s6.1
200428.2°C27.8°C27.4°C29.0°C26.8°C27 mm77%6.2 m/s6.3
200327.6°C27.2°C26.7°C28.8°C25.7°C49 mm77%5.5 m/s6.3
200228.1°C27.6°C27.2°C28.6°C26.5°C40 mm77%6.7 m/s6.2
200127.8°C27.3°C26.9°C28.2°C26.4°C29 mm76%5.8 m/s6.4
200028.3°C27.8°C27.4°C28.9°C26.8°C38 mm77%6.6 m/s6.1
199928.4°C28.0°C27.6°C29.0°C26.8°C16 mm76%5.7 m/s6.5
199827.3°C26.8°C26.2°C28.0°C25.3°C20 mm69%5.6 m/s6.3
199727.4°C26.9°C26.5°C28.2°C25.9°C24 mm75%6.9 m/s6
199627.7°C27.2°C26.8°C28.2°C25.9°C17 mm77%7.2 m/s6.2
199526.8°C26.3°C25.9°C27.4°C25.1°C15 mm75%6.6 m/s6.1
199427.8°C27.4°C27.0°C28.3°C26.1°C104 mm80%6.5 m/s5.7
199326.6°C26.2°C25.8°C27.4°C25.2°C10 mm78%6.3 m/s6.2
199226.9°C26.5°C26.0°C27.4°C25.5°C10 mm74%7.2 m/s6.3
199126.9°C26.5°C26.1°C27.4°C25.5°C17 mm78%7 m/s6.1
199026.9°C26.5°C26.0°C27.7°C25.1°C21 mm78%6.7 m/s6.1
198927.6°C27.1°C26.7°C28.8°C25.4°C12 mm75%4.3 m/s6.3
198827.6°C27.2°C26.7°C28.1°C26.4°C11 mm78%6.8 m/s6.2
198727.3°C26.8°C26.4°C27.8°C25.4°C2 mm78%6.4 m/s6.1
198627.3°C27.0°C26.6°C28.0°C25.7°C90 mm81%6.7 m/s5.6
198527.2°C26.9°C26.5°C27.9°C25.8°C62 mm80%7.4 m/s6.2
198427.5°C27.1°C26.6°C28.4°C25.7°C40 mm79%6.1 m/s6
1983 ❄️26.3°C25.8°C25.3°C27.0°C24.1°C57 mm78%5.5 m/s—
198227.1°C26.7°C26.3°C27.6°C25.5°C27 mm79%6.7 m/s—
198127.6°C27.2°C26.7°C28.2°C25.2°C37 mm79%6.6 m/s—

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

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Agat March Weather — FAQ

What is the average temperature in Agat in March?▼

The average high in March is around 27.7°C with lows near 26.8°C (mean 27.3°C), based on 45 years of NASA POWER data.

Does it rain a lot in Agat in March?▼

March averages 39 mm of rainfall in Agat, one of the drier months. The wettest on record was 118 mm in 2017.

What was the hottest March on record in Agat?▼

The hottest March reached 29°C in 1999. The coldest dipped to 24.1°C in 1983.

Has March in Agat gotten warmer over time?▼

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 1.2°C. Daytime highs moved from 27.1°C to 28.3°C and overnight lows from 26.3°C to 27.4°C over the same span.

Is March a good time to visit Agat?▼

March is one of the cooler months of the year in Agat and one of the drier months, so plan for around 27.7°C daytime highs and 26.8°C at night.

Is March the coldest month in Agat?▼

Not quite — March is the 2nd coolest month in Agat, averaging 27.3°C.

What should I pack for Agat in March?▼

For March in Agat, pack light layers you can adjust through the day, with typical highs of 27.7°C and lows of 26.8°C.

Is Agat humid in March?▼

Relative humidity in March averages 77% — quite humid.

How windy is Agat in March?▼

Average wind speed in March is 6.2 m/s. The windiest March on record averaged 7.4 m/s (1985).

Which March had the most rainfall in Agat?▼

The wettest March on record was 2017 with 118 mm. On average, March sees 39 mm.

Where does this March 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 March, 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 March specifically, along with year-by-year records and how the month has changed over the decades.