Ilocos Sur, Philippines Weather

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

Current conditions

Updated:
23°C
73.4°F
°C °F

Condition: Slight Thunderstorm

Pressure: 978 hPa

Feel like: 27 °C

Temperature: 23°C

Cloud: 100%

Humidity: 99%

Wind: SSW - 14 km/h

Visibility: 1.48 km

Weather forecast

Sun
09 Aug
22°C / 25°C
Slight Thunderstorm
Mon
10 Aug
23°C / 26°C
Thunderstorm With Slight
Tue
11 Aug
23°C / 25°C
Slight Thunderstorm
Wed
12 Aug
22°C / 26°C
Slight Rain Showers
Thu
13 Aug
22°C / 26°C
Slight Thunderstorm
Hourly forecast today:
15:00 PM
23° / 23°
23° / 23°
Slight Thunderstorm
99% 34 km/h
16:00 PM
23° / 23°
23° / 23°
Moderate Rain Showers
99% 33 km/h
17:00 PM
23° / 23°
23° / 23°
Slight Thunderstorm
99% 32 km/h
18:00 PM
22° / 22°
22° / 22°
Slight Thunderstorm
99% 39 km/h
19:00 PM
22° / 22°
22° / 22°
Slight Thunderstorm
99% 39 km/h
20:00 PM
22° / 23°
22° / 23°
Slight Thunderstorm
99% 38 km/h
21:00 PM
22° / 23°
22° / 23°
Slight Thunderstorm
99% 44 km/h
22:00 PM
22° / 22°
22° / 22°
Slight Thunderstorm
99% 42 km/h
23:00 PM
22° / 22°
22° / 22°
Slight Thunderstorm
99% 38 km/h
00:00 AM
22° / 23°
22° / 23°
Violent Rain Showers
98% 40 km/h
01:00 AM
23° / 23°
23° / 23°
Slight Thunderstorm
100% 41 km/h

30 Day Averages and Extremes

  • Average high 26.2°C
  • Average low 22.0°C
  • Hottest day 30°C (27 July 2026)
  • Coldest day 21°C (28 July 2026)
  • Average humidity 94.77%
  • Days with precipitation 30 days
  • Highest precipitation 100 mm (08 August 2026)

Yesterday's Data

  • Max: 25°C
  • Min: 22°C
  • Total Precipitation: 104 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 25ºC (77.0ºF), consider wearing:
- UV-protective sunglasses
- Breathable shorts or skirts
- Wide-brimmed sun hat
- Thin, moisture-wicking socks

Temperature

Early
23°C / 24°C
Morning
24°C / 24°C
Afternoon
23°C / 23°C
Evening
22°C / 23°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 444
  • CO 119
  • NH3 0
  • NO2 1
  • O3 69
  • PM10 6
  • PM25 3
  • SO2 0
  • CH4 1,337

Sunrise / Sunset

21:39
10:27