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Best time to visit Guam
The best time to visit in Guam is from January until June and November and December, when you will have a warm temperature and limited till mediocre rainfall. The highest average temperature in in Guam is 29°C in May and the lowest is 28°C in January.
If you want to know what the average temperature is in in Guam or when most precipitation (rain or snow) falls, you can find a quick overview below. This way, you are well prepared. Our average monthly climate data is based on data from the past 30 years.
Average weather Guam by month
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature (°C) | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Precipitation (mm) | 67 | 51 | 44 | 59 | 69 | 94 | 179 | 192 | 213 | 212 | 101 | 77 |
Climate data from city: Hagåtña
14 day weather forecast Guam
The weather for in Guam will be 28° till 29° degrees in the next 14 days with every day chance of light rain showers till heavy rain.
The weather forecast for Guam is based on the weather conditions in the city of Hagåtña.
Weather forecast this week
 |
Friday 22 Oct | Water | Precip | Chance | Wind | UV |
28° 26° |
30° | 15.5 mm | 85% | 4 m/s | 4 | |
 |
Saturday 23 Oct | Water | Precip | Chance | Wind | UV |
28° 25° |
30° | 27.2 mm | 90% | 4 m/s | 3 | |
|
Sunday 24 Oct | Water | Precip | Chance | Wind | UV |
26° 24° |
30° | 98.5 mm | 95% | 8 m/s | 3 | |
 |
Monday 25 Oct | Water | Precip | Chance | Wind | UV |
28° 25° |
30° | 5.1 mm | 65% | 6 m/s | 3 | |
 |
Tuesday 26 Oct | Water | Precip | Chance | Wind | UV |
29° 27° |
30° | 0.1 mm | 20% | 4 m/s | 3 | |
 |
Wednesday 27 Oct | Water | Precip | Chance | Wind | UV |
29° 26° |
30° | 3.9 mm | 55% | 4 m/s | 5 | |
 |
Thursday 28 Oct | Water | Precip | Chance | Wind | UV |
30° 26° |
30° | 10.2 mm | 75% | 3 m/s | 4 |
Weather forecast next week
|
Friday 29 Oct | Water | Precip | Chance | Wind | UV |
30° 27° |
30° | 4.0 mm | 55% | 3 m/s | 7 | |
|
Saturday 30 Oct | Water | Precip | Chance | Wind | UV |
30° 27° |
30° | 0.1 mm | 20% | 3 m/s | 8 | |
|
Sunday 31 Oct | Water | Precip | Chance | Wind | UV |
29° 27° |
30° | 1.6 mm | 35% | 4 m/s | 5 | |
|
Monday 1 Nov | Water | Precip | Chance | Wind | UV |
29° 27° |
30° | 3.2 mm | 50% | 5 m/s | 1 | |
|
Tuesday 2 Nov | Water | Precip | Chance | Wind | UV |
29° 27° |
30° | 4.8 mm | 60% | 5 m/s | 1 | |
|
Wednesday 3 Nov | Water | Precip | Chance | Wind | UV |
29° 26° |
30° | 1.0 mm | 25% | 4 m/s | 1 | |
 |
Thursday 4 Nov | Water | Precip | Chance | Wind | UV |
28° 25° |
30° | 9.2 mm | 75% | 4 m/s | 1 |
Climate Guam
The average annual temperature for Guam is 29° degrees and there is about 1358 mm of rain in a year. It is dry for 49 days a year with an average humidity of 77% and an UV-index of 7.
Climate table of Guam
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day temp. (°C) | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Night temp. (°C) | 27 | 27 | 27 | 28 | 28 | 29 | 29 | 29 | 29 | 28 | 28 | 28 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Precipitation (mm) | 67 | 51 | 44 | 59 | 69 | 94 | 179 | 192 | 213 | 212 | 101 | 77 |
| Days with rain | 20 | 16 | 19 | 17 | 22 | 25 | 29 | 29 | 28 | 29 | 24 | 22 |
| Dry days | 11 | 12 | 12 | 13 | 9 | 5 | 2 | 2 | 2 | 2 | 6 | 9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Sun hours per day | 8 | 8 | 8 | 9 | 11 | 11 | 9 | 8 | 8 | 7 | 6 | 7 |
| Wind force (Bft) | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 |
| UV-index | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
Climate data from city: Hagåtña
Guam weather by month
What is the average weather like in a given month for Guam? Let's find out! Click on a month to check all the monthly averages for sunshine, temperature highs and lows, percentage chance of rain per day, snowfall accumulation and number of rainy days.
Weather experiences Guam
Already been to Guam?
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Popular places in Guam
- Hagåtña
- Ipan
- South Gayinero
- Upper Tumon
- Maina
- Merizo
- Mongmong
- Sinajana
- Talofofo
- Toto
- Umatac
- Windward Hills
- University of Guam
- Asan
- Tumon
- Barrigada
- Chaguian
- Anao
- Y Sengsong
- Harmon Industrial Park
- Y Papao
- Pagat
- Ordot
- Mangilao
- Maite
- Liguan
- Machanao
- Nimitz Hill
- Agana Heights
- Astumbo
- Adacao
- Machananao West
- Afame
- Apotgan
- Yona
Frequently asked questions
Where is Guam?
Guam lies in a straight line about 6,822 km from New Zealand (Wellington → Hagåtña).
How long is the flight to Guam?
The flight time from Auckland Airport to Guam is approximately 9 hours.
How many inhabitants are there in Guam?
Guam has approximately 184,200 inhabitants.
How big is Guam?
The area of Guam is around 184,200 km². It is slightly smaller than New Zealand.
What is the capital of Guam?
The capital of Guam is Hagåtña.
What is the currency of Guam?
In Guam the US dollar (USD) is used to pay.
Exchange rates on 22 October 2021
- 1 US dollar = 0.69 New Zealand dollar
- 1 New Zealand dollar = 1.45 US dollar
- 10 US dollar = 6.92 New Zealand dollar
- 10 New Zealand dollar = 14.46 US dollar
- 100 US dollar = 69.15 New Zealand dollar
- 100 New Zealand dollar = 144.61 US dollar
What is the area code of Guam?
The area code to call Guam is +671.