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Hailin weather by month: averages, rainfall & climate trends

Hailin swings through a wide annual range, with 39.1°C between the monthly means of its warmest and coldest months. Rainfall is strongly seasonal: the bulk of the year's rain falls between May and September. Hailin weather by month: average temperatures, rainfall, records and how the climate has changed since 1940.

Today vs average

+3.0°Chigh well above average

19° / 3°Today
16° / 4°Average
see today in detail →

How it's changed

+2.2°Caverage temperature, 2016–2025 vs 1940–1949average temperature vs 1940–49165frost days a year now (2016–2025) · 174 in the 1940sfrost days a year · 174 in the 1940s17days above 30°C a year now (2016–2025) · 5 in the 1940sdays above 30°C · 5 in the 1940s+2.2°C vs the 1940s · see how it's changed →
Weather by montha typical year, averaged over the full recordJanuary, rain 10 mmhigh −11°low −22°February, rain 12 mmhigh −6°low −19°March, rain 23 mmhigh 2°low −9°April, rain 44 mmhigh 13°low 1°May, rain 76 mmhigh 20°low 8°June, rain 87 mmhigh 24°low 14°July, rain 117 mmhigh 27°low 18°August, rain 132 mmhigh 26°low 17°September, rain 65 mmhigh 21°low 10°October, rain 44 mmhigh 12°low 1°November, rain 27 mmhigh 1°low −9°December, rain 13 mmhigh −8°low −19°wettest month August, 132 mm · 650 mm a yearsee month by month →

Right now

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

Right now

4.0°

1°feels like
74%humidity
0°dew point
5 km/hfrom N
UV index0.1
sunrise05:29sunset16:49day length11h 20m
FriOvercast19°3°
SatOvercast18°8°
SunClear20°8°
MonOvercast21°9°
TueLight rain16°6°
WedOvercast13°1°
ThuPartly cloudy16°4°

On this date: October 8

Today (forecast)
19° / 3°
Average for October 8
16° / 4°

High well above average · +3.0°C

  • Record high: 24.4° · 2004
  • Record low: −3.9° · 1990
  • One year ago: 13° / 1°

Every October 8 in history, coldest to hottest

▲ Daily highs▼ Daily lows

Dots show daily highs (top) and lows (bottom) for each October 8 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 Hailin is sampled from the ECMWF ERA5 reanalysis at 44.57°N, 129.39°E, with daily records since 1940.

Coordinates
44.57°N, 129.39°E
Time zone
Asia/Shanghai
Period
1940–2026
Data source
ERA5 (ECMWF)

Last 30 days

15 of the last 31 days were warmer than the historical average for that date. Average difference: +0.4°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

The year peaks in July, at around 26.9°C by mid-afternoon, with nights around 18.2°C. Roughly 15 days a year now top 30°C. At the other extreme, January brings afternoon highs of about −11.0°C and typical overnight lows of −22.4°C. Around 165 days a year dip below freezing.

In total, Hailin averages about 650 mm of precipitation a year; August is usually the wettest month (132 mm) and January the driest (10 mm).

Over the full record (since 1940), the annual mean temperature in Hailin has risen by 2.2°C between its first decade and its last. No period since 1940 has been warmer than the most recent decade.

Climate graph (climograph)

July is the warmest month, January the coolest: a yearly swing of 39°C. Wettest month: August (~132 mm). Whole year averages ~650 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).

Rainy days by month

About 72 rainy days a year: most in July (~11), fewest in January (~1).

Bars = average number of days with ≥ 2 mm per month. Hover for the monthly rainfall total.

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.

Hailin 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 lowRainRainy daysDaylightRecord highRecord low
January−11.0°−22.4°10 mm19.0 h4.8° (1967)−36.4° (1941)
February−6.5°−18.7°12 mm110.2 h11.6° (1960)−33.1° (1952)
March2.1°−8.6°23 mm311.6 h20.7° (2018)−28.5° (1955)
April12.5°1.3°44 mm613.3 h31.9° (2015)−16.0° (1980)
May19.7°8.2°76 mm914.6 h33.7° (1985)−5.1° (1972)
June24.2°14.2°87 mm1115.3 h37.6° (2010)5.3° (1954)
July26.9°18.2°117 mm1115.0 h37.5° (1997)10.0° (1946)
August25.9°17.1°132 mm1113.9 h37.2° (1982)5.7° (1978)
September20.7°9.7°65 mm712.3 h31.0° (1958)−3.2° (1980)
October12.4°1.4°44 mm610.7 h28.7° (2019)−12.9° (1976)
November0.8°−8.7°27 mm39.3 h18.8° (2003)−33.5° (1947)
December−8.5°−18.7°13 mm28.6 h9.2° (1958)−34.2° (1947)

How it's changed

Year-by-year signals from 1940 to today.

Climate stripes

Annual mean shifted from 1940–1949 to 2016–2025 by +2.2°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: +0.29°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

Dec–Feb is warming fastest: +0.45°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: 4.7 early in the record → 16.6 recently. Frost days: 174 → 165.

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 1941: 37.6°C / −36.4°C.

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

Annual rainfall

~650 mm/year on average. Last decade: +4% vs that average. Long-term trend: −6 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 Hailin

Which is the warmest month in Hailin?
On long-term average, the warmest month in Hailin is July (mean daily temperature of about 22.3°C) and the coolest is January (about −16.8°C).
How does today's temperature in Hailin compare to the historical average?
On October 8, 2026, Hailin is forecast to reach a high of 18.6°C and a low of 2.6°C. The long-term average for this date (the full record since 1940) is a high of 15.6°C and a low of 3.8°C, so today's high is 3.0°C warmer than that average.
How much has Hailin warmed since 1940?
Comparing the first decade of the record (1940–1949) with the most recent (2016–2025), the annual mean temperature in Hailin is about 2.2°C warmer.
How much does it rain in Hailin?
Hailin receives about 650 mm of precipitation per year on long-term average, with August typically the wettest month.
What is the average temperature in Hailin?
Over the full record (since 1940), the annual mean temperature in Hailin is about 4.6°C. The warmest month is July and the coolest is January.
What are the average temperatures in Hailin by month?
Average daily highs and lows for each month in Hailin (°C, full record since 1940): January −11°/−22°, February −6°/−19°, March 2°/−9°, April 13°/1°, May 20°/8°, June 24°/14°, July 27°/18°, August 26°/17°, September 21°/10°, October 12°/1°, November 1°/−9°, December −8°/−19°.
What is the weather like in Hailin in summer?
Summer in Hailin (June to August) is wet and pleasantly warm. Expect 24–27°C by day and 14–18°C at night, with July the warmest month. Rain rises from 87 mm in June to 132 mm in August. No season is wetter.
What is the weather like in Hailin in winter?
In winter, December through February, Hailin is freezing. Daytime highs sit at −11 to −6°C and nights at −22 to −19°C; January is the coldest month. Snow falls on about 1 day a month, adding up to around 12 mm of precipitation. No season is drier.
What is the weather like in Hailin in spring?
Spring in Hailin (March to May) is cool. March starts at 2°C by day and −9°C at night; by May it is 20°C and 8°C. Rain and snow rise from 23 mm on 3 days in March to 76 mm on 9 days in May.
What is the weather like in Hailin in autumn?
September to November is autumn in Hailin, and it is cool. September still brings 21°C afternoons and 10°C nights, November only 1°C and −9°C. Rain and snow fall off from 65 mm on 7 days in September to 27 mm on 3 days in November.
How many days a year does it rain in Hailin?
On long-term average, Hailin has about 72 days a year with at least 2 mm of rain or snow. The annual total is roughly 650 mm.

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