Ilocos Sur, Philippines Weather

Ilocos Sur,  Weather
(Photo by Brian Kairuz on Unsplash)

Current conditions

Updated:
26°C
78.8°F
°C °F

Condition: Partly Cloudy

Pressure: 985 hPa

Feel like: 31 °C

Temperature: 26°C

Cloud: 49%

Humidity: 86%

Wind: NNE - 8 km/h

Visibility: 24.14 km

Weather forecast

Thu
13 Nov
26°C / 28°C
Overcast
Fri
14 Nov
27°C / 29°C
Overcast
Sat
15 Nov
28°C / 29°C
Overcast
Sun
16 Nov
28°C / 29°C
Mainly Clear
Mon
17 Nov
27°C / 30°C
Overcast
Hourly forecast today:
15:00 PM
24° / 26°
24° / 26°
Partly Cloudy
86% 12 km/h
16:00 PM
24° / 26°
24° / 26°
Partly Cloudy
86% 12 km/h
17:00 PM
24° / 26°
24° / 26°
Partly Cloudy
85% 12 km/h
18:00 PM
23° / 26°
23° / 26°
Partly Cloudy
84% 12 km/h
19:00 PM
23° / 26°
23° / 26°
Partly Cloudy
83% 12 km/h
20:00 PM
23° / 26°
23° / 26°
Partly Cloudy
83% 12 km/h
21:00 PM
23° / 26°
23° / 26°
Partly Cloudy
83% 12 km/h
22:00 PM
23° / 26°
23° / 26°
Partly Cloudy
82% 11 km/h
23:00 PM
23° / 26°
23° / 26°
Partly Cloudy
82% 12 km/h
00:00 AM
23° / 26°
23° / 26°
Partly Cloudy
82% 14 km/h
01:00 AM
23° / 27°
23° / 27°
Mainly Clear
82% 16 km/h

30 Day Averages and Extremes

  • Average high 28.8°C
  • Average low 25.07°C
  • Hottest day 33°C (09 November 2025)
  • Coldest day 19°C (25 November 2025)
  • Average humidity 78.87%
  • Days with precipitation 26 days
  • Highest precipitation 98 mm (10 November 2025)

Yesterday's Data

  • Max: 27°C
  • Min: 26°C
  • Total Precipitation: 5 mm

Temperature and possibility of rain in Ilocos Sur over the next 12 hours

Temperature and possibility of rain in Ilocos Sur in the coming days

Rainfall in Ilocos Sur in the coming days

Ilocos Sur Climate Summary

Ilocos Sur features a Tropical monsoon (Köppen classification: Am), with an average annual temperature of 27.79ºC (82.02ºF), which is about 0.57% higher than the national average for Philippines. Annually, the city experiences approximately 95.19 millimeters (3.75 inches) of rainfall, spread across 154.91 rainy days, accounting for 42.44% of the year.

Longitude 17.2278664
Latitude 120.5739579
Yearly high temperature 30.35ºC (86.63ºF)
Yearly low temperature 23.03ºC (73.45ºF)
Hottest month April 31.88ºC (89.38ºF)
Coldest month January 20.78ºC (69.4ºF)
Yearly precip 95.19mm (3.75in)
Days with rainfall 154.91 days (42.44%)
Driest month February (69.68%)
Wettest month August (80.25%)

Weather averages by month

Month High / Low (°C) Rain
January 28.75° / 20.78° 2.55 days
February 29.42° / 20.88° 1.91 days
March 30.86° / 22.02° 2.45 days
April 31.88° / 23.52° 7.55 days
May 32.47° / 24.85° 14.82 days
June 31.28° / 24.68° 23.36 days
July 29.98° / 23.98° 26.36 days
August 29.6° / 23.81° 25.91 days
September 30.06° / 23.65° 22.09 days
October 30.1° / 23.05° 13.91 days
November 30.23° / 22.74° 7.82 days
December 29.6° / 22.36° 6.18 days

Frequently asked questions

1. What is the hottest month in Ilocos Sur?

April has the highest average monthly temperature (daily mean of 31.88ºC) and January are the coolest (daily mean of 20.78ºC).

2. What should I wear in Ilocos Sur today?

For today's very hot weather in Ilocos Sur, with the high temperatures above 28ºC (82.4ºF), consider wearing:
- Sunscreen for skin protection
- Thin, moisture-wicking socks
- Lightweight t-shirt or tank top
- Open-toed sandals or light sneakers

Temperature

Early
23°C / 27°C
Morning
23°C / 27°C
Afternoon
24°C / 26°C
Evening
23°C / 26°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 481
  • CO 237
  • NH3 0
  • NO2 2
  • O3 62
  • PM10 17
  • PM25 14
  • SO2 1
  • CH4 1,434

Sunrise / Sunset

22:01
09:23