Ilocos Sur, Philippines Weather

  1. Ilocos Sur, Philippines Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Ilocos Sur over the next 12 hours
  7. Temperature and possibility of rain in Ilocos Sur in the coming days
  8. Rainfall in Ilocos Sur in the coming days
  9. Ilocos Sur Weather Summary
  10. Weather averages by month
  11. Ilocos Sur's weather
  12. Frequently asked questions
  13. Comments
Ilocos Sur, Weather
(Photo by Brian Kairuz on Unsplash)

Current conditions

Updated:
20°C
68.0°F
°C °F

Condition: Overcast

Pressure: 985 hPa

Feel like: 24 °C

Temperature: 20°C

Cloud: 96%

Humidity: 99%

Wind: E - 5 km/h

Visibility: 0.24 km

Weather forecast

Mon
21 Sep
21°C / 29°C
Slight Thunderstorm
Tue
22 Sep
20°C / 29°C
Slight Thunderstorm
Wed
23 Sep
20°C / 29°C
Slight Thunderstorm
Thu
24 Sep
20°C / 29°C
Drizzle
Fri
25 Sep
21°C / 28°C
Moderate Drizzle
Hourly forecast today:
22:00 PM
20° / 20°
20° / 20°
Overcast
99% 11 km/h
23:00 PM
22° / 22°
22° / 22°
Clear Sky
99% 13 km/h
00:00 AM
24° / 25°
24° / 25°
Clear Sky
92% 13 km/h
01:00 AM
23° / 27°
23° / 27°
Mainly Clear
81% 10 km/h
02:00 AM
23° / 28°
23° / 28°
Drizzle
72% 16 km/h
03:00 AM
23° / 28°
23° / 28°
Drizzle
70% 23 km/h
04:00 AM
23° / 27°
23° / 27°
Moderate Drizzle
74% 28 km/h
05:00 AM
24° / 27°
24° / 27°
Drizzle
81% 25 km/h
06:00 AM
23° / 28°
23° / 28°
Drizzle
78% 16 km/h
07:00 AM
23° / 27°
23° / 27°
Drizzle
78% 20 km/h
08:00 AM
24° / 25°
24° / 25°
Moderate Drizzle
91% 20 km/h

30 Day Averages and Extremes

  • Average high 28.1°C
  • Average low 21.13°C
  • Hottest day 30°C (13 September 2026)
  • Coldest day 20°C (20 September 2026)
  • Average humidity 90.93%
  • Days with precipitation 30 days
  • Highest precipitation 88 mm (07 September 2026)

Yesterday's Data

  • Max: 29°C
  • Min: 22°C
  • Total Precipitation: 8 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

Ilocos Sur's weather

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:
- Breathable shorts or skirts
- Thin, moisture-wicking socks
- Lightweight t-shirt or tank top
- Open-toed sandals or light sneakers

Temperature

Early
23°C / 29°C
Morning
23°C / 24°C
Afternoon
22°C / 23°C
Evening
21°C / 21°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 560
  • CO 168
  • NH3 0
  • NO2 2
  • O3 46
  • PM10 5
  • PM25 4
  • SO2 0
  • CH4 1,490

Sunrise / Sunset

21:46
09:55