On this page, you will find information about the climate and the best time to visit Guam. We created climate tables and charts for the location of Tamuning. These contain details about temperatures, precipitation and more.
Furthermore, we analyzed all climate data and provide a recommendation about which months are best to visit Guam for your holiday.
Climate Overview
23 °C to 32 °C
28 °C to 30 °C
2.36 – 15.98 in (16 – 25 Days of Rain)
Show temperatures in degree
General & Geographical Location
Table of Contents
2. Climate in Guam
3. Best Time to Travel for Guam: Overview
4. When is the best time to travel in Guam?
5. Climate Chart Guam
5.1 Climate Chart Tamuning
6. Climate Table Guam
6.1 Climate Table Tamuning
7. Highlights and Sights
8. Popular Activities
9. Current Weather and Forecast
10. South Pacific Islands: Regions
11. Share your Experience and Win
Guam is the largest island of the Mariana archipelago in the western Pacific and is home to about 190,000 inhabitants on an area of about 340 square miles.
As this is a so-called non-incorporated US foreign territory, Head of State Guams is the current US President Barack Obama. Guam has internal autonomy, so that although the inhabitants are Americans, they are not allowed to vote in the US elections, for example.
The island is located on a flat lime plateau about 1300 miles east of the Philippines and about 1500 miles south of the Japanese island Honsh?. This situation has always given Guam a high military significance for the USA.
But Guam is also a very popular tourist destination and the second most visited destination in the Pacific after Hawaii. The highest elevation is Mount Lamlam, 406 meters high.
The official language of the office is English, paid in US dollars. Many inhabitants speak Chamorro, the language of the original wine inhabitants, and Filipino language variants are also very common.
Climate in Guam
Due to its proximity to the equator, Guam has high temperatures all year round and a typically tropical South Sea climate. The island is one of the wettest regions in the world, but its breathtaking beauty is impressive. Basically two travel times can be distinguished on Guam:
The dry season runs from about mid-December to the end of June, has a lower humidity and somewhat more moderate day temperatures. December is still quite humid as a transition month, especially in the first half of the month.
At the beginning of July at the latest, the rainy season starts on Guam, trade winds now carry moist Pacific air to the island and heavy rainfalls and often thunderstorms occur almost every afternoon and evening. The risk of typhoons is quite low, but statistically Guam is affected about every 8 years during the rainy season.
Beach Vacation in February
Ko Samui
28 °C 
30 °C
1.3 in
Maldives
27 °C 30 °C
1.97 in
Punta Cana
26 °C 28 °C
2.13 in
Jamaica
26 °C 28 °C
2.52 in
Curaçao
25 °C 29 °C
1.1 in
Oman
25 °C 28 °C
0.63 in
Dubai
21 °C 25 °C
1.42 in
Diani Beach
29 °C 33 °C
0.51 in
Zanzibar
29 °C 32 °C
2.2 in
Best Time to Visit Guam: Overview
JanuaryJan Best time to traveltime PerfectPerf. climate in | FebruaryFeb Best time to traveltime PerfectPerf. climate in | MarchMar Best time to traveltime PerfectPerf. climate in | AprilApr Best time to traveltime PerfectPerf. climate in | MayMay Best time to traveltime PerfectPerf. climate in | JuneJun Very hot (average up to 28 °C) |
JulyJul Up to 0.11 in of rainof rain | AugustAug Up to 16.39 in of rainof rain | SeptemberSep Up to 13.58 in of rainof rain | OctoberOct Up to 11.74 in of rainof rain | NovemberNov Very hot (average up to 28 °C) | DecemberDec Best time to traveltime PerfectPerf. climate in |
When is the best time to travel in Guam?
The two different seasons already give an idea of the best time to travel on Guam, it is of course recommended to prefer the much more pleasant dry season on the island. Around Christmas it is already getting very friendly, but also traditionally very crowded and expensive in Guam.
We therefore recommend the period from mid-January to the end of May as the best travel time for the island paradise in Micronesia (South Seas). The dry season offers the best conditions for diving, snorkelling, swimming and all kinds of water sports. February is ideal for active holidaymakers, as it is not yet getting so hot.
Climate Chart Guam
Tamuning
Show temperatures in degree
Source of Data: German Weather Service (Offenbach) and Wikipedia
Climate Table Guam
In the following, you will find the climate table for Guam, containing information about Temperatures, Precipitation, Water Temperatures, and Hours of Sunshine.
Temperatures, Precipitation, Sunshine in Tamuning (Guam)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day Temperature | 30° | 29° | 30° | 31° | 32° | 32° | 31° | 31° | 31° | 31° | 31° | 30° |
| Night Temperature | 23° | 23° | 24° | 25° | 25° | 25° | 25° | 25° | 25° | 25° | 25° | 25° |
| Water Temperature | 28° | 28° | 28° | 28° | 29° | 29° | 29° | 30° | 29° | 30° | 29° | 28° |
| Precipitation (inch) | 3.9 | 3.39 | 2.35 | 2.84 | 4.28 | 7.75 | 11.45 | 16 | 13.58 | 11.74 | 8.08 | 6 |
| Rainy days | 19 | 16 | 17 | 17 | 19 | 23 | 25 | 25 | 24 | 25 | 23 | 22 |
| Hours of Sunshine | 6 | 7 | 7 | 7 | 7 | 7 | 5 | 5 | 4 | 4 | 5 | 5 |
Show temperatures in degree
Temperatures
The annual average temperature in Tamuning is 27.7 °C.
For comparison: London 11 °C, NYC 12 °C, LA 17.9 °C
Warmest month: June (28.4 °C)
Coldest month: February (26.7 °C)
The maximum water temperature in Tamuning is 30 °C. You can take a bath at these temperatures.
Months with water temperature of at least 21 °C (adequate for beach vacation):
all months
Precipitation
Overall annual precipitation: 91.37 inch on 255 rainy days
For comparison: London 24.06 in, NYC 41.57 in, LA 12.01 in
Rainy season (months with more than 6.9 in of precipitation): June, July, August, September, October, and November
Overall precipitation in the rainy season: 68.6 in
You cannot expect snow in any month in Tamuning.
Sunshine
As our climate table shows, April is the sunniest month with an average of 7.1 hours of sunshine per day. Over the year, there are 5.6 hours of sunshine per day on average. For comparison: London has 4.1, NYC has 7 and LA has 8.9 hours of sunshine per day on average.
Highlights and Sights
Even if the American culture has become very formative for Guam today, impressive remnants of the Spanish occupation can still be found on the island. Especially the Latte Stone Park, Two Lovers Point and the Plaza de Espana are worth a visit.
The two old shelters Fort Santa Agueda and Fort Nuestra Senora de la Soledad are also popular attractions in Guam. But the main attractions of the island are of course its beautiful beaches and the impressive underwater world, which made Guam a popular honeymoon destination and dream destination for divers.
The best beaches in Guam are Ritidian Point, Tumon Beach and Gun Beach. The latter passes directly into the neighbouring Ypao Beach Park at the Hilton Hotel. Under water, both the colourful diversity of species and the impressive wrecks on the seabed inspire with fantastic diving conditions.
Popular Activities
Guam: Self-Guided Car Tour with Audio Narration and App
Tours
from 14 $ »
Take a drive around the beautiful island of Guam on a self-guided tour by app with audio narration and videos. Circle the island and see everything from old war bunkers to perfect beaches and trails.
Current Weather and Forecast
Current Weather in Tamuning (Station Socio)
few clouds, 26.9 °C
Clouds: 20 % Wind: 15 mph O
Air Pressure: 1011 hPa Humidity: 86 %
Last updated: 7th Feb 2023, 12:04 pm
The next days …
| 7th Feb 2023 | 8th Feb 2023 | 9th Feb 2023 | 10th Feb 2023 | 11th Feb 2023 | 12th Feb 2023 |
|---|---|---|---|---|---|
 26 °C to 28 °C | 26 °C to 28 °C | 26 °C to 28 °C | 26 °C to 27 °C | 26 °C to 28 °C | 26 °C to 28 °C |
| 26 °C to 28 °C | 26 °C to 28 °C | 26 °C to 28 °C | 26 °C to 27 °C | 26 °C to 28 °C | 26 °C to 28 °C |
| Clouds: 58 % | Clouds: 78 % | Clouds: 97 % | Clouds: 71 % | Clouds: 100 % | Clouds: 93 % |
| 0.02 in of rain | 0 in of rain | 0.12 in of rain | 0.12 in of rain | 0.06 in of rain | 0.15 in of rain |
Weather information provided by OpenWeatherMap. (CC BY-SA)
Show temperatures in degree
South Pacific Islands: Regions
Guam is part of the holiday destination South Pacific Islands. We analyzed the climate for additional regions, in order to provide you with information about the best time to visit and the expected holiday weather:
South Pacific Islands | Palau | Micronesiea | Solomon Islands | New Caledonia | Vanuatu | Fiji | Tuvalu | Nauru | Kiribati | Tonga | Samoa | American Samoa | Cook Islands | French Polynesia |
Best Time to Travel for the Regions
Tamuning: January, February, March, April, May, and December
Hottest Month
May: 32 °C
Day Temperature in Tamuning
Coldest Month
February: 23 °C
Night Temperature in Tamuning
Rainiest Month August: 16 in
Rain in Tamuning
Driest Month
March: 2.35 in
Rain in Tamuning
Maximum Water Temperature August: 30 °C
Water Temperature in Tamuning
Sunniest Month April: 7.1 hours/day
Sunshine in Tamuning
Distances to Guam
| London | New York | Los Angeles | |
|---|---|---|---|
| Tamuning | 7490 mi | 7950 mi | 6090 mi |
Where’s Guam?
Continent: Oceania
All Holiday Destinations in Oceania
Proof of Image Sources
Share your Experience and Win
We want to know: how was the weather during your Guam holiday? You can win a travel coupon of 1000 $. The price will be raffled among all submissions. 
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