Guiuan, Philippines experiences average highs of 28°C (82°F) and lows of 26°C (79°F) throughout the year. Rainfall is frequent, averaging about 25 rainy days per month. Sunshine is abundant, averaging about 10 hours per day. High humidity combined with warm temperatures produces a tropical feel year-round. Average highs have stayed broadly stable across the available records.
Guiuan, Philippines Weather & Climate 2026
Monthly climate averages for Guiuan, Philippines. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Feb–Sep 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.1/10
Best: January, February, March
UV Index
8
High
Temperature 28°C / 26°C
Feels Like 32°C / 29°C
Rainy Days 25
Rainfall 275 mm
Sunshine 10 h
Humidity 83%
Wind Speed 25 km/h
Dew Point 24°C
Hottest Month
29°C
August
Avg Low27°C
Rain22days
Coldest Month
26°C
February
Avg High27°C
Rain23days
Driest Month
21days
March
Avg High27°C
Avg Low26°C
Windiest Month
31 km/h
February (Gusts 43)
Sea Temperature
28°C – 31°C
Warmest water: June (
30.6°C
)
Worst Time to Visit
Consider avoiding May, June, August, September due to heavy rainfall, oppressive humidity.
Sun Position
Sunrise 05:16
Daylight 12.8h
Sunset 18:02
Live conditions—
Guiuan on the map · live conditions
Guiuan, Philippines
- Continent
- Asia
- Country
- Philippines
- City
- Guiuan
- Population
- 11K
- Coordinates
- 11.03°, 125.72°
Seasonal Breakdown
Spring
Mar–May
Avg High 28°C
Avg Low 26°C
Rain 22 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 29°C
Avg Low 27°C
Rain 25 days/mo
Autumn
Sep–Nov
Avg High 28°C
Avg Low 27°C
Rain 26 days/mo
Winter
Dec–Feb
Avg High 27°C
Avg Low 26°C
Rain 26 days/mo
2/3 best months
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 27°C / 26°C . Feb: 27°C / 26°C . Mar: 27°C / 26°C . Apr: 28°C / 26°C . May: 29°C / 27°C . Jun: 29°C / 27°C . Jul: 29°C / 27°C . Aug: 29°C / 27°C . Sep: 29°C / 27°C . Oct: 28°C / 27°C . Nov: 28°C / 26°C . Dec: 28°C / 26°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 383 mm. Feb: 235 mm. Mar: 188 mm. Apr: 169 mm. May: 201 mm. Jun: 264 mm. Jul: 277 mm. Aug: 209 mm. Sep: 197 mm. Oct: 324 mm. Nov: 373 mm. Dec: 482 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 84%. Feb: 83%. Mar: 83%. Apr: 83%. May: 83%. Jun: 82%. Jul: 81%. Aug: 81%. Sep: 81%. Oct: 83%. Nov: 85%. Dec: 86%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 31 km/h . Feb: 31 km/h . Mar: 27 km/h . Apr: 24 km/h . May: 21 km/h . Jun: 19 km/h . Jul: 22 km/h . Aug: 22 km/h . Sep: 21 km/h . Oct: 22 km/h . Nov: 27 km/h . Dec: 29 km/h .
Sunshine
Sunshine
Sunshine: Jan: 9h. Feb: 10h. Mar: 10h. Apr: 11h. May: 11h. Jun: 10h. Jul: 9h. Aug: 10h. Sep: 10h. Oct: 9h. Nov: 9h. Dec: 9h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 28°C . Feb: 28°C . Mar: 28°C . Apr: 29°C . May: 30°C . Jun: 31°C . Jul: 30°C . Aug: 31°C . Sep: 30°C . Oct: 31°C . Nov: 30°C . Dec: 29°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 7. Feb: UV 8. Mar: UV 9. Apr: UV 9. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 8. Oct: UV 8. Nov: UV 7. Dec: UV 7.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending wetter by about 133 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | — | Aug · 29°C |
| Coldest month | — | Feb · 26°C |
| Wettest month | Nov 2025 · 512 mm | Dec · 482 mm |
| Windiest month | Feb 2025 · 31 km/h | Feb · 31 km/h |
Month-by-Month Weather Table
January best
Wet 
February best
Wet March best
Wet April
Wet May
Wet June
Wet July
Wet August
Wet September
Wet October
Wet November
Wet December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 27°C / 26°C | 30°C / 27°C | 27days (383 mm) Wet | 8.8h Good | 84% Humid | 6.7 High | Wet | View Details |
| February best | 27°C / 26°C | 30°C / 27°C | 23days (235 mm) Wet | 9.6h Good | 83% Humid | 7.5 Very High | Wet | View Details |
| March best | 27°C / 26°C | 31°C / 28°C | 21days (188 mm) Wet | 10.4h Excellent | 83% Humid | 8.5 Very High | Wet | View Details |
| April | 28°C / 26°C | 33°C / 29°C | 21days (169 mm) Wet | 10.7h Excellent | 83% Humid | 8.9 Very High | Wet | View Details |
| May | 29°C / 27°C | 34°C / 31°C | 25days (201 mm) Wet | 10.7h Excellent | 83% Humid | 8.1 Very High | Wet | View Details |
| June | 29°C / 27°C | 34°C / 31°C | 27days (264 mm) Wet | 9.8h Good | 82% Humid | 8 Very High | Wet | View Details |
| July | 29°C / 27°C | 34°C / 31°C | 25days (277 mm) Wet | 9.4h Good | 81% Humid | 7.6 Very High | Wet | View Details |
| August | 29°C / 27°C | 34°C / 31°C | 22days (209 mm) Wet | 9.6h Good | 81% Humid | 8.3 Very High | Wet | View Details |
| September | 29°C / 27°C | 34°C / 31°C | 23days (197 mm) Wet | 9.5h Good | 81% Humid | 7.8 Very High | Wet | View Details |
| October | 28°C / 27°C | 34°C / 30°C | 28days (324 mm) Wet | 9.3h Good | 83% Humid | 7.9 Very High | Wet | View Details |
| November | 28°C / 26°C | 32°C / 29°C | 28days (373 mm) Wet | 9h Good | 85% Humid | 6.8 High | Wet | View Details |
| December | 28°C / 26°C | 31°C / 29°C | 29days (482 mm) Wet | 8.5h Good | 86% Very Muggy | 6.5 High | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Guiuan are January, February, March, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Guiuan, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Guiuan is August, with average daytime highs of 29°C (84°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Guiuan is February, with average overnight lows of 26°C (78°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Guiuan is December, averaging 482mm of precipitation across 29 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Guiuan runs through December, October, November, January, with the heaviest rainfall in December. Based on 10-year averages for Guiuan.
Guiuan receives approximately 115 sunshine hours per year. The sunniest month is April with around 11 hours. Based on climate data for Guiuan.
The least favorable months to visit Guiuan are May, June, August, September, primarily due to heavy rainfall, oppressive humidity. For the best conditions, consider January, February, March instead.
The annual average UV index in Guiuan is 8, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Guiuan is 83%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Yes — sea temperatures in January, February, March, April, May, June, July, August, September, October, November, December average 30°C (86°F), which is warm and comfortable for swimming and water activities.
Average wind speeds in Guiuan are 25 km/h (16 mph). The windiest month is February with peak winds reaching 31 km/h (19 mph) (gusts up to 43 km/h / 27 mph).
Guiuan averages 1 clear-sky days per month with overall cloud cover around 75%. The clearest skies occur in April.
The annual average dew point in Guiuan is 24°C (75°F), which feels oppressively humid. Expect heavy perspiration during warmer months — stay hydrated and take breaks in air-conditioned spaces.
Guiuan has a Tropical Rainforest climate, classified as Af under the Köppen system. Tropical climates are warm year-round with high rainfall and temperatures rarely dropping below 18°C (64°F).
The 'feels like' temperature in Guiuan ranges from 29°C (84°F) to 32°C (90°F) on average. Humidity and radiant heat mean it often feels warmer than the thermometer reads, especially in summer months.
June is not the best time to visit Guiuan, with a climate score of 2.3/10. Consider visiting during January, February, March instead for better conditions.
For June in Guiuan, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 29°C (84°F) and 27 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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