Ilocos Sur, Philippines Weather

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

Current conditions

Updated:
27°C
80.6°F
°C °F

Condition: Slight Thunderstorm

Pressure: 981 hPa

Feel like: 32 °C

Temperature: 27°C

Cloud: 84%

Humidity: 88%

Wind: SW - 17 km/h

Visibility: 3.74 km

Weather forecast

Thu
13 Aug
23°C / 26°C
Thunderstorm With Slight
Fri
14 Aug
22°C / 28°C
Slight Thunderstorm
Sat
15 Aug
22°C / 27°C
Thunderstorm With Slight
Sun
16 Aug
22°C / 24°C
Slight Rain Showers
Mon
17 Aug
22°C / 24°C
Moderate Rain Showers
Hourly forecast today:
04:00 AM
25° / 27°
25° / 27°
Slight Thunderstorm
88% 40 km/h
05:00 AM
24° / 26°
24° / 26°
Slight Thunderstorm
92% 41 km/h
06:00 AM
25° / 26°
25° / 26°
Thunderstorm With Slight
94% 35 km/h
07:00 AM
25° / 26°
25° / 26°
Slight Thunderstorm
97% 29 km/h
08:00 AM
23° / 24°
23° / 24°
Slight Thunderstorm
95% 27 km/h
09:00 AM
23° / 24°
23° / 24°
Slight Thunderstorm
98% 27 km/h
10:00 AM
23° / 23°
23° / 23°
Slight Rain Showers
98% 24 km/h
11:00 AM
23° / 23°
23° / 23°
Slight Rain Showers
97% 27 km/h
12:00 PM
23° / 23°
23° / 23°
Drizzle Dense Intensity
98% 26 km/h
13:00 PM
23° / 23°
23° / 23°
Drizzle
98% 24 km/h
14:00 PM
23° / 23°
23° / 23°
Overcast
97% 28 km/h

30 Day Averages and Extremes

  • Average high 25.6°C
  • Average low 21.3°C
  • Hottest day 30°C (27 July 2026)
  • Coldest day 0°C (25 August 2026)
  • Average humidity 91.53%
  • Days with precipitation 30 days
  • Highest precipitation 100 mm (08 August 2026)

Yesterday's Data

  • Max: 27°C
  • Min: 22°C
  • Total Precipitation: 22 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 26ºC (78.8ºF), consider wearing:
- Lightweight t-shirt or tank top
- Wide-brimmed sun hat
- Breathable shorts or skirts
- Open-toed sandals or light sneakers

Temperature

Early
25°C / 27°C
Morning
23°C / 24°C
Afternoon
23°C / 23°C
Evening
22°C / 23°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 428
  • CO 120
  • NH3 0
  • NO2 1
  • O3 84
  • PM10 7
  • PM25 5
  • SO2 2
  • CH4 1,339

Sunrise / Sunset

21:40
10:24