País in Oceania

Guam Clima and Average Tempo

Clima of Guam: average temperatures, rainfall and seasons month by month.

🌦️ 30°C now🕔 5:22 PM local📅 Best: janeiro, fevereiro and dezembro👥 170.000

Clima in Guam month by month

Average high, average low and total rainfall, based on three years of reanalysis data.

janfevmarabrmaijunjulagosetoutnovdezLine: average high · Bars: rainfall
MêsMáxima médiaMínima médiaPrecipitaçãoAvaliação
janeiro30°25°63 mm★★★★
fevereiro30°25°62 mm★★★★
março31°25°120 mm★★★★
abril31°25°126 mm★★★☆☆
mai32°26°136 mm★★★☆☆
junho32°26°220 mm★★★☆☆
julho31°25°421 mm★★☆☆☆
agosto31°25°283 mm★★☆☆☆
setembro30°25°459 mm★★☆☆☆
outubro30°25°374 mm★★☆☆☆
novembro31°26°140 mm★★★☆☆
dezembro31°26°80 mm★★★★

Clima type: Tropical. Fonte: Open-Meteo archive (ERA5).

Recent extremes in Guam

Altoest and lowest readings observed in the last 3 years of reanalysis data – not all-time records.

Hottest day34°Cjun 10, 2026
Coldest night23°Cmar 3, 2024
Wettest day247 mmjul 6, 2026

Melhor época para visitar Guam

Go in janeiro, fevereiro and dezembro. These months score highest on comfortable temperatures, low rainfall and useful daylight.

Hardest months: julho, agosto and setembro – expect the least comfortable mix of heat, cold or rain.

janeiro★★★★
fevereiro★★★★
março★★★★
abril★★★☆☆
mai★★★☆☆
junho★★★☆☆
julho★★☆☆☆
agosto★★☆☆☆
setembro★★☆☆☆
outubro★★☆☆☆
novembro★★★☆☆
dezembro★★★★

What this means for Guam

Compared com normal

Today is about average for setembro. The forecast high of 30°C is in line com the 30°C typical for this month.

Chuva chance explained

A 97% chance means rain is expected over most of the area. Plan indoor alternatives. Around 16 mm is forecast, which is enough a soak trails and slow traffic.

Viagens and driving

Wet roads are likely; braking distances roughly double in heavy rain.

Worth knowing

Within 15 degrees of the equator, day length barely changes all year; seasons are defined by rain, not temperature.

Worth knowing

Northern Hemisphere, so peak summer falls in junho a agosto.

Worth knowing

The gap between the warmest and coldest month averages 1°C – an unusually even climate through the year.

What a pack, what a skip

Pack for the next 7 days
  • Lightweight, light-coloured clothing and a refillable water bottle
  • dom.glasses, a brimmed hat and SPF 30+
  • A packable rain shell – 7 of the next 7 days carry a real chance of rain
  • Insect repellent and quick-dry fabrics for humidity
Worth avoiding
  • If your dates are flexible, avoid julho, agosto and setembro – historically the least comfortable months here.

Resumo

Guam é um país da Oceania. Guam é um país da Oceania com capital em Hagatna. Tem uma população de cerca de 170.000. A capital é Hagatna.

Neste momento, a temperatura é de 30°C (86°F) in Guam com chuvisco fraco. A sensação térmica é de 33°C. Hoje as temperaturas variam de 25°C a 30°C. A probabilidade de precipitação é de 97%. As condições para passeios turísticos têm pontuação de 5.2/10 – marginal.

A melhor época para visitar Guam is janeiro, fevereiro and dezembro. O clima é tropical. julho, agosto and setembro costumam ser os meses menos confortáveis. mai é o mês mais quente, com máximas médias próximas de 32°C, enquanto março é o mês mais frio, com mínimas próximas de 25°C.

Em termos simples. Today is about average for setembro. The forecast high of 30°C is in line com the 30°C typical for this month. The best window a be outside is roughly 7 AM a 10 AM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Guam today at 7.8/10. Wet roads are likely; braking distances roughly double in heavy rain.

Compiled from this page's own data: atlas facts plus live Open-Meteo readings.

Quick facts about Guam

TipoPaís
ContinenteOceania
ContinenteOceania
Coordenadas13°26′39.5″N 144°47′37.3″E (13.4443, 144.7937)
CapitalHagatna
População170.000
Area544 km²
ISO codeGU
ISO 3166-1 alpha-3GUM
CurrencyUS dollar (USD)
LanguagesEnglish, Chamorro
Calling code+1-671
Fuso horárioPacific/Guam
Hora local5:22 PM (UTC+10:00)
Melhores mesesjaneiro, fevereiro and dezembro
ClimaTropical

Tempo map for Guam

Animated model layers. Pick a layer a load it.

Loading map…

Animated layers by Ventoy. For pin-level detail and nearby places, see the interactive map below.

Explore Guam

Every topic we hold for this place, and the same topic for the places around it.

Clima for related places

Frequently asked questions

Where is Guam?

Guam é um país da Oceania. Its coordinates are 13.4443, 144.7937. It lies in Oceania.

What is the weather like in Guam agora?

It is currently 30°C (86°F) com chuvisco fraco. Humidade is 69% and wind is 21 km/h.

When is the best time a visit Guam?

janeiro, fevereiro and dezembro offer the most comfortable conditions in Guam, which has a tropical climate. julho, agosto and setembro are usually the hardest months for outdoor plans.

What time zone is Guam in?

Guam observes Pacific/Guam (UTC+10:00). The hora local is 5:22 PM.

How many people live in Guam?

Guam has a population of approximately 170.000.

Related articles

Data sources and methodology

Place dataUSPOTUS Atlas dataset (countries-v1) – coordinates, hierarchy and facts.
Previsão and observationsOpen-Meteo (ECMWF and national models).
Qualidade do ar and pollenCopernicus CAMS via Open-Meteo. US AQI scale.
Clima averagesERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years.
MethodScores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing – the block is simply not shown.

Last updated setembro 18, 2026 at 5:22 PM hora local. Live blocks refresh every 15 minutes; climate averages monthly.

Davil Hofile
Written byWriter at USPOTUS

Davil Hofile is a writer at USPOTUS covering breaking news, NFL updates, viral stories, entertainment, pets, and lifestyle. He specializes in transforming complex news into clear, trustworthy, and engaging articles that help readers quickly understand what's happening across the United States. His reporting follows Google's E-E-A-T guidelines, emphasizing accuracy, credible sources, and practical value for readers.

More from Davil Hofile