Guam Weather in March 2027 | Temperature & Rainfall

Climate Overview

Guam in March has warm conditions, with highs averaging 27.4°C (81°F). Rain falls on about 13 days this month. Winds are noticeable.

This month falls at the beginning of Spring.

Monthly March Averages

Temperature

27°C / 26°C

Feels Like

30°C / 28°C

Rain

13 days · 44 mm

Sunshine

11.3h / day

Humidity

81% — Very Humid

Wind

31 km/h

Wind Direction

ENE (76°)

Gusts

42 km/h

Daylight

12.1 h

Cloud Cover

47%

Clear Sky Days

3.7

Dew Point

23°C — Muggy

Moon Phase

First Quarter · 46%

Seasonal Demand

Quiet (2/5)

Sun Position

Sunrise 06:30

Daylight 12h

Sunset 18:33

What to Expect

Daytime temperatures around 27°C (81°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain most often builds later in the day, so mornings are typically the driest window and afternoon showers are more likely.

Weather conditions this month are less ideal compared to other times of the year. Indoor activities or shorter outings may be more comfortable.

Pros

Comfortable temperatures for sightseeing
Abundant sunshine for exploring and outdoor fun
Quieter period with less favourable weather

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces. A waterproof jacket and shoes are non-negotiable — showers are frequent.

Packing List

UmbrellaWaterproof jacketBreathable clothingSunscreen (SPF 30+)Sun hatSunglassesComfortable walking shoes

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	Status	Details
January best	28°C / 26°C	30°C / 27°C	14days (81 mm) Wet	10.7h Excellent	80% Humid	Good	View Details
February best	27°C / 26°C	29°C / 27°C	12days (59 mm) Wet	10.8h Excellent	79% Humid	Good	View Details
March	27°C / 26°C	30°C / 28°C	13days (44 mm) Wet	11.3h Excellent	81% Humid	Fair	View Details
April	28°C / 27°C	32°C / 29°C	15days (84 mm) Wet	11.6h Excellent	82% Humid	Fair	View Details
May	28°C / 27°C	32°C / 29°C	17days (117 mm) Wet	11.9h Excellent	82% Humid	Fair	View Details
June	28°C / 27°C	33°C / 30°C	22days (175 mm) Wet	11.4h Excellent	82% Humid	Wet	View Details
July	29°C / 27°C	33°C / 30°C	29days (268 mm) Wet	10.1h Excellent	84% Humid	Wet	View Details
August	29°C / 27°C	34°C / 30°C	29days (311 mm) Wet	9.4h Good	83% Humid	Wet	View Details
September	29°C / 27°C	34°C / 30°C	28days (333 mm) Wet	9.1h Good	83% Humid	Wet	View Details
October	28°C / 27°C	33°C / 30°C	29days (409 mm) Wet	8.8h Good	84% Humid	Wet	View Details
November	29°C / 27°C	32°C / 29°C	25days (184 mm) Wet	10.3h Excellent	83% Humid	Wet	View Details
December	28°C / 27°C	31°C / 29°C	20days (110 mm) Wet	10.7h Excellent	81% Humid	Wet	View Details

Frequently Asked Questions

Expand all

Is March a good time to visit Guam?

March is typically fair for visiting Guam, with average highs of 27°C (81°F) and around 13 rainy days. Guam in March has warm conditions, with highs averaging 27.4°C (81°F). Rain falls on about 13 days this month. Winds are

Does it rain a lot in Guam in March?

Guam typically sees around 13 rainy days in March with 44 mm (1.7 in) of total rainfall. Pack a waterproof jacket.

What should I pack for Guam in March?

With highs of 27°C (81°F) and lows of 26°C (79°F) in March, we recommend: Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. Comfortable walking shoes are essential.

Is March among the best months weather-wise in Guam?

March is not the most favourable month weather-wise in Guam. Consider visiting during months with milder temperatures or less rainfall for a better experience.

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