Guam Weather in March
March in Guam typically sees daytime highs of 28°C (82°F) and nighttime lows of 26°C (79°F). With the least rainfall of the year, it's a reliably dry month.
Rainfall in Guam in March
This is the driest month of the year. Analyzing past climate data, one can expect approximately 20 days of rain, averaging 59 mm (2.3 in). This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.
Temperature in Guam in March
March is a perfect month in Guam, with 28°C (82°F) during the day and 26°C (79°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights are warm at 26°C (79°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Guam in March
Enjoy a sunny month with about 218 hours of sunshine, the clear skies make Guam even more beautiful.If you're a fan of comfortable temperatures and drier conditions, March is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Micronesia, check out our Guam's climate page.
Guam Temperature in March
Min Temperature
26°C (79°F)
Max Temperature
28°C (82°F)
Chance of Rain
67%
Precipitation
59 mm (2.3 in)
Rainy days
20 days
Sunshine
218 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Guam typically stay consistent throughout March, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in March
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in March
Historical weather for Guam in March
Browse day-by-day weather records for Guam spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Guam historical weather extremes in March
Based on 50 years of weather observations in Guam between 1976 and 2026, these are the recorded extremes.
- On March 3, 1979, temperatures climbed to 33°C (91°F), marking the warmest March day on record.
- The coldest March day was on March 18, 2017, with a maximum of 26°C (79°F).
- The lowest overnight temperature recorded in March was 21°C (70°F) (March 10, 2018).
Best Places in Micronesia in March
Find out more about the weather in Micronesia and which places have the best travel conditions in this month. See all of Micronesia in March →
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What to Wear in Guam in March
Warm weather calls for comfortable, breathable clothing in March. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Guam in March
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Micronesia, check out our Guam's climate page.
See the full Guam climate overview or explore weather in Micronesia.
