Hernani, Philippines experiences average highs of 29°C (84°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.
Hernani, Philippines Weather & Climate 2026
Monthly climate averages for Hernani, Philippines. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Sep 
Wetter season: May–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
3.2/10
Best: January, February
UV Index
8
High
Temperature 29°C / 26°C
Feels Like 35°C / 30°C
Rainy Days 25
Rainfall 259 mm
Sunshine 10 h
Humidity 85%
Wind Speed 18 km/h
Dew Point 25°C
Hottest Month
30°C
August
Avg Low 26°C
Rain 24 days
Coldest Month
25°C
February
Avg High 28°C
Rain 23 days
Driest Month
21 days
March
Avg High 28°C
Avg Low 25°C
Windiest Month
24 km/h
February (Gusts 42)
Sea Temperature
28°C – 30°C
Warmest water: June (
30.4°C
)
Worst Time to Visit
Consider avoiding May, June, July, August due to extreme heat, heavy rainfall, oppressive humidity.
Sun Position
Sunrise 05:14
Daylight 12.8h
Sunset 18:02
Live conditions —
Hernani on the map · live conditions
Hernani, Philippines
- Continent
- Asia
- Country
- Philippines
- City
- Hernani
- Population
- 2.2K
- Coordinates
- 11.33°, 125.62°
Seasonal Breakdown
Spring
Mar–May
Avg High 29°C
Avg Low 26°C
Rain 23 days/mo
Summer
Jun–Aug
Avg High 30°C
Avg Low 26°C
Rain 26 days/mo
Autumn
Sep–Nov
Avg High 29°C
Avg Low 26°C
Rain 27 days/mo
Winter
Dec–Feb
Avg High 28°C
Avg Low 25°C
Rain 26 days/mo
2/3 best months
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
High Low Shaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 28°C / 25°C . Feb: 28°C / 25°C . Mar: 28°C / 25°C . Apr: 29°C / 26°C . May: 30°C / 26°C . Jun: 30°C / 26°C . Jul: 30°C / 26°C . Aug: 30°C / 26°C . Sep: 30°C / 26°C . Oct: 29°C / 26°C . Nov: 29°C / 26°C . Dec: 28°C / 25°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 334 mm. Feb: 208 mm. Mar: 168 mm. Apr: 161 mm. May: 198 mm. Jun: 277 mm. Jul: 293 mm. Aug: 247 mm. Sep: 220 mm. Oct: 306 mm. Nov: 309 mm. Dec: 389 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 86%. Feb: 85%. Mar: 84%. Apr: 84%. May: 86%. Jun: 86%. Jul: 84%. Aug: 83%. Sep: 84%. Oct: 86%. Nov: 87%. Dec: 88%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 24 km/h . Feb: 24 km/h . Mar: 21 km/h . Apr: 18 km/h . May: 16 km/h . Jun: 14 km/h . Jul: 15 km/h . Aug: 15 km/h . Sep: 15 km/h . Oct: 15 km/h . Nov: 20 km/h . Dec: 22 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: 8h.
Sea Temperature
Sea Temperature
Line chart showing monthly sea temperature. Jan: 28°C . Feb: 28°C . Mar: 28°C . Apr: 29°C . May: 30°C . Jun: 30°C . Jul: 30°C . Aug: 30°C . Sep: 30°C . Oct: 30°C . Nov: 29°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
Daylight 12h 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 116 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 30°C | Aug · 30°C |
| Coldest month | Feb 2025 · 25°C | Feb · 25°C |
| Wettest month | Aug 2025 · 454 mm | Dec · 389 mm |
| Windiest month | Feb 2025 · 23 km/h | Feb · 24 km/h |
Month-by-Month Weather Table
January best
Wet 
February best
Wet March
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 | 28°C / 25°C | 32°C / 28°C | 26days (334 mm) Wet | 8.7h Good | 86% Very Muggy | 6.7 High | Wet | View Details |
| February best | 28°C / 25°C | 31°C / 27°C | 23days (208 mm) Wet | 9.5h Good | 85% Humid | 7.5 Very High | Wet | View Details |
| March | 28°C / 25°C | 33°C / 28°C | 21days (168 mm) Wet | 10.4h Excellent | 84% Humid | 8.5 Very High | Wet | View Details |
| April | 29°C / 26°C | 35°C / 30°C | 21days (161 mm) Wet | 10.8h Excellent | 84% Humid | 8.9 Very High | Wet | View Details |
| May | 30°C / 26°C | 36°C / 31°C | 27days (198 mm) Wet | 10.6h Excellent | 86% Very Muggy | 8.1 Very High | Wet | View Details |
| June | 30°C / 26°C | 36°C / 31°C | 27days (277 mm) Wet | 9.7h Good | 86% Very Muggy | 8 Very High | Wet | View Details |
| July | 30°C / 26°C | 36°C / 31°C | 26days (293 mm) Wet | 9.3h Good | 84% Humid | 7.6 Very High | Wet | View Details |
| August | 30°C / 26°C | 36°C / 31°C | 24days (247 mm) Wet | 9.6h Good | 83% Humid | 8.3 Very High | Wet | View Details |
| September | 30°C / 26°C | 36°C / 31°C | 25days (220 mm) Wet | 9.5h Good | 84% Humid | 7.8 Very High | Wet | View Details |
| October | 29°C / 26°C | 36°C / 30°C | 28days (306 mm) Wet | 9.2h Good | 86% Very Muggy | 7.9 Very High | Wet | View Details |
| November | 29°C / 26°C | 34°C / 30°C | 27days (309 mm) Wet | 8.9h Good | 87% Very Muggy | 6.8 High | Wet | View Details |
| December | 28°C / 25°C | 33°C / 29°C | 29days (389 mm) Wet | 8.4h Good | 88% Very Muggy | 6.5 High | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Hernani are January, February, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Hernani, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Hernani is August, with average daytime highs of 30°C (86°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Hernani is February, with average overnight lows of 25°C (77°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Hernani is December, averaging 389mm of precipitation across 29 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Hernani runs through December, October, May, June, with the heaviest rainfall in December. Based on 10-year averages for Hernani.
Hernani receives approximately 115 sunshine hours per year. The sunniest month is April with around 11 hours. Based on climate data for Hernani.
The least favorable months to visit Hernani are May, June, July, August, primarily due to extreme heat, heavy rainfall, oppressive humidity. For the best conditions, consider January, February instead.
The annual average UV index in Hernani is 8, classified as high. SPF 30+ sunscreen, sunglasses, and seeking shade between 10:00–16:00 are strongly recommended.
Average humidity in Hernani is 85%, 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 29°C (84°F), which is warm and comfortable for swimming and water activities.
Average wind speeds in Hernani are 18 km/h (11 mph). The windiest month is February with peak winds reaching 24 km/h (15 mph) (gusts up to 42 km/h / 26 mph).
Hernani averages 0 clear-sky days per month with overall cloud cover around 77%. The clearest skies occur in April.
The annual average dew point in Hernani is 25°C (77°F), which feels oppressively humid. Expect heavy perspiration during warmer months — stay hydrated and take breaks in air-conditioned spaces.
Hernani 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 Hernani ranges from 30°C (86°F) to 35°C (95°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 Hernani, with a climate score of 2.1/10. Consider visiting during January, February instead for better conditions.
For June in Hernani, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 30°C (85°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.
Last updated: