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Sorsogon weather by month: averages, rainfall & climate trends

Warmth in Sorsogon is remarkably steady: only 2.3°C separates the warmest month from the coolest, so there is no cold season to speak of. Rainfall leans toward the stretch from September to January. Sorsogon weather by month: average temperatures, rainfall, records and how the climate has changed since 1940.

Today vs average

+0.9°Chigh near average

29° / 27°Today
29° / 26°Average
see today in detail →

How it's changed

+1.3°Caverage temperature, 2016–2025 vs 1940–1949average temperature vs 1940–4965days above 30°C a year now (2016–2025) · 1 in the 1940sdays above 30°C · 1 in the 1940s+1.3°C vs the 1940s · see how it's changed →
Weather by montha typical year, averaged over the full recordJanuary, rain 284 mmhigh 26°low 24°February, rain 180 mmhigh 27°low 24°March, rain 156 mmhigh 27°low 25°April, rain 119 mmhigh 28°low 26°May, rain 150 mmhigh 29°low 26°June, rain 193 mmhigh 29°low 26°July, rain 237 mmhigh 29°low 26°August, rain 208 mmhigh 29°low 26°September, rain 225 mmhigh 29°low 26°October, rain 272 mmhigh 28°low 26°November, rain 311 mmhigh 28°low 25°December, rain 354 mmhigh 27°low 25°wettest month December, 354 mm · 2,690 mm a yearsee month by month →

Right now

What it's doing today vs the historical average for this date.
Thunderstorm

Right now

28.4°

35°feels like
87%humidity
26°dew point
9 km/hfrom NE
UV index5.5
sunrise05:34sunset17:23day length11h 49m
TodayShowers29°27°
MonPartly cloudy31°26°
TuePartly cloudy32°27°
WedOvercast31°27°
ThuOvercast32°28°
FriOvercast31°28°
SatOvercast32°27°

On this date: October 18

Today (forecast)
29° / 27°
Average for October 18
29° / 26°

High near average · +0.9°C

  • Record high: 30.3° · 1977
  • Record low: 24.6° · 1965
  • One year ago: 28° / 26°

Every October 18 in history, coldest to hottest

▲ Daily highs▼ Daily lows

Dots show daily highs (top) and lows (bottom) for each October 18 on record (n = 87). Outlined dots are today's forecast.

Area we sample

Each city's history comes from one ERA5 grid cell, about 28 km across, shown by the dashed box. Near mountains or coasts, conditions can vary across the cell.

Location & data

Historical weather for Sorsogon is sampled from the ECMWF ERA5 reanalysis at 12.97°N, 123.99°E, with daily records since 1940.

Coordinates
12.97°N, 123.99°E
Time zone
Asia/Manila
Period
1940–2026
Data source
ERA5 (ECMWF)

Last 30 days

31 of the last 31 days were warmer than the historical average for that date. Average difference: +1.1°C.

Each bar is one day, from morning low to afternoon high. Warm-colored bars are days whose mean ran above average; cool bars ran below. The dot inside the bar is the daily mean. The shaded band is the typical 10–90% range expected for that date. Average = the day's mean temperature averaged across every year of record (1940–2026) for that calendar date.

This date over the years

One dot per year, showing the mean temperature on this calendar date. Dots are warmer or cooler than the long-term average (dashed line); the shaded band is the typical 10–90% range, and the highlighted dot is today's forecast. Based on ERA5 reanalysis: modelled estimates, not station readings.

Weather by month

Average temperatures and rainfall for each month: a typical year, from the full record.

Climate overview

May brings the year's peak warmth, with afternoons typically reaching 29.2°C and nights around 26.2°C. At the other extreme, January brings afternoon highs of about 26.5°C and typical overnight lows of 24.4°C.

In total, Sorsogon averages about 2,690 mm of precipitation a year; December is usually the wettest month (354 mm) and April the driest (119 mm).

Comparing the record's first decade with its most recent one, Sorsogon now averages 1.3°C warmer than it did in the 1940s. Days above 30°C have grown noticeably more frequent, from around 1 a year in the first decade to about 65 in the last.

Climate graph (climograph)

May is the warmest month, January the coolest: a yearly swing of 2°C. Wettest month: December (~354 mm). Whole year averages ~2,690 mm of rain.

Bars = average monthly rainfall (right axis). Lines = average daily high and low (left axis). Average = each month's value averaged across every year of record (1940–2026).

Monthly wind

Average daily peak wind at 10 m, by month.

Monthly solar energy

Average daily incoming solar energy in megajoules per square metre: the record's own proxy for how sunny the month is.

Sorsogon month by month: what to expect

Typical conditions for each month, averaged across the full record (since 1940). Daylight is the time from sunrise to sunset. Record high/low are the most extreme values in the ERA5 dataset (modelled since 1940), so they can differ from official weather-station readings.

MonthAvg highAvg lowRainDaylightRecord highRecord low
January26.5°24.4°284 mm11.3 h29.6° (2022)22.0° (1961)
February26.7°24.4°180 mm11.6 h29.7° (2011)21.5° (1963)
March27.3°24.8°156 mm11.9 h30.9° (1961)21.9° (1963)
April28.3°25.5°119 mm12.3 h31.4° (1990)22.0° (1963)
May29.2°26.2°150 mm12.6 h32.5° (2010)24.3° (1943)
June29.3°26.2°193 mm12.8 h32.0° (1983)24.5° (1965)
July29.0°26.0°237 mm12.7 h32.0° (2010)24.1° (1965)
August29.0°26.0°208 mm12.4 h31.9° (1998)24.3° (1943)
September28.9°25.9°225 mm12.1 h31.9° (2024)23.6° (1948)
October28.4°25.7°272 mm11.7 h31.4° (2024)23.6° (1963)
November27.8°25.4°311 mm11.4 h31.0° (2022)23.0° (1978)
December27.0°24.9°354 mm11.2 h29.8° (1998)22.8° (1996)

How it's changed

Year-by-year signals from 1940 to today.

Climate stripes

Annual mean shifted from 1940–1949 to 2016–2025 by +1.3°C.

Each vertical stripe is one year. Color encodes how much that year's annual mean differed from the long-term average. Average = each year's annual mean compared to the average of all years (1940–2026). cooler ← → warmer

Annual mean temperature

Long-term trend: +0.15°C per decade.

One point per year, showing the temperature averaged across the whole year. The dashed line is the least-squares long-term trend. Based on ERA5 reanalysis: modelled estimates, not station readings.

Seasonal warming

Mar–May is warming fastest: +0.16°C per decade.

Each faint line is one three-month period's average per year; the bold dashed line is its long-term trend. Different parts of the year often warm at different rates. Based on ERA5 reanalysis: modelled estimates, not station readings.

Hot days vs frost days

Days ≥ 30°C per year: 1.0 early in the record → 65.1 recently. Frost days: 0 → 0.

Thin lines are raw yearly counts; thick lines are the smoothed trend that removes year-to-year noise. The hot-day threshold is auto-picked per city so the line actually moves. Average = a centered 5-year rolling average to smooth weather noise.

Yearly hot & cold extremes

All-time high in 2010, all-time low in 1963: 32.5°C / 21.5°C.

One point per year: the single hottest and coldest day recorded that year.

Annual rainfall

~2,690 mm/year on average. Last decade: +28% vs that average. Long-term trend: +99 mm per decade.

One bar per year of total rainfall. Dashed line is the long-term average. Average = the average annual rainfall across every year of record (1940–2026).

Day-by-day grid

Each tiny square is one calendar day across the full record, about 30,000 days per city. Use the mode switch above the chart: Anomaly colors each day by how far it ran from the historical average for that date (red = warmer, blue = cooler), Daily mean temp shows the absolute mean temperature for the day (useful to see seasons and heatwaves), and Precipitation shows daily rainfall (useful to spot wet/dry seasons and droughts). Average = the long-term average for that calendar date (1940–2026).

Frequently asked questions about Sorsogon

Which is the warmest month in Sorsogon?
On long-term average, the warmest month in Sorsogon is May (mean daily temperature of about 27.7°C) and the coolest is January (about 25.4°C).
How does today's temperature in Sorsogon compare to the historical average?
On October 18, 2026, Sorsogon is forecast to reach a high of 29.4°C and a low of 26.5°C. The long-term average for this date (the full record since 1940) is a high of 28.5°C and a low of 25.7°C, so today's high is 0.9°C warmer than that average.
How much has Sorsogon warmed since 1940?
Comparing the first decade of the record (1940–1949) with the most recent (2016–2025), the annual mean temperature in Sorsogon is about 1.3°C warmer.
How much does it rain in Sorsogon?
Sorsogon receives about 2,690 mm of precipitation per year on long-term average, with December typically the wettest month.
What is the average temperature in Sorsogon?
Over the full record (since 1940), the annual mean temperature in Sorsogon is about 26.7°C. The warmest month is May and the coolest is January.
What are the average temperatures in Sorsogon by month?
Average daily highs and lows for each month in Sorsogon (°C, full record since 1940): January 26°/24°, February 27°/24°, March 27°/25°, April 28°/26°, May 29°/26°, June 29°/26°, July 29°/26°, August 29°/26°, September 29°/26°, October 28°/26°, November 28°/25°, December 27°/25°.

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