WeatherJourney.com

Kaili weather by month: averages, rainfall & climate trends

Kaili has well-marked seasons, with 19.7°C between its warmest and coolest monthly means. The heavier rain months run from April to August. Kaili weather by month: average temperatures, rainfall, extremes and how the climate has changed since 1940.

Today vs average

−1.1°Chigh near average

20° / 13°Today
21° / 14°Average
see today in detail →

How it's changed

+1.3°Caverage temperature, 2016–2025 vs 1940–1949average temperature vs 1940–498frost days a year now (2016–2025) · 17 in the 1940sfrost days a year · 17 in the 1940s74days above 30°C a year now (2016–2025) · 7 in the 1940sdays above 30°C · 7 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 52 mmhigh 9°low 3°February, rain 64 mmhigh 11°low 5°March, rain 109 mmhigh 16°low 9°April, rain 165 mmhigh 21°low 14°May, rain 232 mmhigh 25°low 18°June, rain 247 mmhigh 27°low 21°July, rain 178 mmhigh 30°low 23°August, rain 161 mmhigh 30°low 23°September, rain 115 mmhigh 27°low 20°October, rain 103 mmhigh 22°low 15°November, rain 63 mmhigh 17°low 10°December, rain 41 mmhigh 12°low 5°wettest month June, 247 mm · 1,531 mm a yearsee month by month →

Right now

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

Right now

13.3°

13°feels like
88%humidity
11°dew point
7 km/hfrom NE
UV index0.0
sunrise06:50sunset18:14day length11h 24m
TodayLight rain20°13°
ThuOvercast17°13°
FriOvercast16°15°
SatOvercast21°14°
SunOvercast19°17°
MonOvercast20°16°
TueOvercast18°14°

On this date: October 21

Today (forecast)
20° / 13°
Average for October 21
21° / 14°

High near average · −1.1°C

  • Highest since 1940: 27.8° · 2006
  • Lowest since 1940: 8.4° · 1945
  • One year ago: 12° / 9°

Every October 21 in history, coldest to hottest

▲ Daily highs▼ Daily lows

Dots show daily highs (top) and lows (bottom) for each October 21 on record (n = 86). 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 Kaili is sampled from the ECMWF ERA5 reanalysis at 26.59°N, 107.98°E, with daily records since 1940.

Coordinates
26.59°N, 107.98°E
Time zone
Asia/Shanghai
Period
1940–2026
Data source
ERA5 (ECMWF)

Last 30 days

24 of the last 30 days were warmer than the historical average for that date. Average difference: +3.2°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 29.6°C by mid-afternoon, with nights around 23.2°C. Around 125 nights a year stay above 20°C. In January, the coolest month, afternoons reach about 9.3°C and nights dip to 3.1°C.

Kaili picks up roughly 1,531 mm a year, with a peak of 247 mm in June and as little as 41 mm in December. A typical year brings rain or snow on around 153 days.

Comparing the record's first decade with its most recent one, Kaili now averages 1.3°C warmer than it did in the 1940s. Days above 30°C have grown noticeably more frequent, from around 7 a year in the first decade to about 75 in the last.

Climate graph (climograph)

July is the warmest month, January the coolest: a yearly swing of 20°C. Wettest month: June (~247 mm). Whole year averages ~1,531 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 153 rainy days a year: most in June (~19), fewest in December (~6).

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.

Kaili 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. Highest and Lowest are the most extreme values in the ERA5 dataset (modelled since 1940), so they can differ from official weather-station readings.

MonthAvg highAvg lowRainRainy daysDaylightHighestLowest
January9.3°3.1°52 mm810.5 h26.3° (1967)−8.6° (1977)
February11.0°4.6°64 mm911.1 h29.2° (1979)−9.6° (1977)
March16.0°8.9°109 mm1311.8 h33.4° (2025)−3.8° (1951)
April21.2°14.0°165 mm1612.6 h33.8° (1957)2.6° (1972)
May24.9°18.2°232 mm1813.3 h35.0° (2023)7.4° (1960)
June27.5°21.3°247 mm1913.7 h34.6° (2004)13.0° (1987)
July29.6°23.2°178 mm1613.5 h36.3° (1971)16.6° (1989)
August29.7°22.5°161 mm1612.9 h36.3° (2021)15.5° (1980)
September27.0°19.5°115 mm1112.1 h36.1° (2010)11.2° (1997)
October21.7°14.6°103 mm1111.4 h34.5° (2022)3.4° (1942)
November16.7°9.6°63 mm810.7 h29.4° (2022)−2.3° (1979)
December11.6°4.8°41 mm610.3 h26.0° (1974)−5.4° (1966)

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: +0.12°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

Jun–Aug is warming fastest: +0.20°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: 7.1 early in the record → 74.1 recently. Frost days: 17 → 8.

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

Hottest day since 1940 in 1971, coldest in 1977: 36.3°C / −9.6°C.

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

Annual rainfall

~1,531 mm/year on average. Last decade: −6% vs that average. Long-term trend: −25 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 Kaili

Which is the warmest month in Kaili?
On long-term average, the warmest month in Kaili is July (mean daily temperature of about 26.0°C) and the coolest is January (about 6.3°C).
How does today's temperature in Kaili compare to the historical average?
On October 21, 2026, Kaili is forecast to reach a high of 19.8°C and a low of 13.0°C. The long-term average for this date (the full record since 1940) is a high of 20.9°C and a low of 13.7°C, so today's high is 1.1°C cooler than that average.
How much has Kaili warmed since 1940?
Comparing the first decade of the record (1940–1949) with the most recent (2016–2025), the annual mean temperature in Kaili is about 1.3°C warmer.
How much does it rain in Kaili?
Kaili receives about 1,531 mm of precipitation per year on long-term average, with June typically the wettest month.
What is the average temperature in Kaili?
Over the full record (since 1940), the annual mean temperature in Kaili is about 17.0°C. The warmest month is July and the coolest is January.
What are the average temperatures in Kaili by month?
Average daily highs and lows for each month in Kaili (°C, full record since 1940): January 9°/3°, February 11°/5°, March 16°/9°, April 21°/14°, May 25°/18°, June 27°/21°, July 30°/23°, August 30°/23°, September 27°/20°, October 22°/15°, November 17°/10°, December 12°/5°.
What is the weather like in Kaili in summer?
Summer in Kaili (June to August) is wet and warm. Daytime highs sit at 27–30°C and nights at 21–23°C; August is the warmest month. Rain eases through the season: 19 rainy days and 247 mm in June, 16 days and 161 mm in August.
What is the weather like in Kaili in winter?
In winter, December through February, Kaili is on the cool side. Afternoons run 9–12°C and nights 3–5°C; January is the coldest month. Rain rises from 41 mm on 6 days in December to 64 mm on 9 days in February. It is the driest season of the year.
What is the weather like in Kaili in spring?
Spring in Kaili (March to May) is wet and mild. March starts at 16°C by day and 9°C at night; by May it is 25°C and 18°C. Rain picks up through the season: 13 rainy days and 109 mm in March, 18 days and 232 mm in May.
What is the weather like in Kaili in autumn?
In autumn, September through November, Kaili is mild. It cools from 27°C by day and 20°C at night in September to 17°C and 10°C in November. Rain falls off from 115 mm on 11 days in September to 63 mm on 8 days in November.
How many days a year does it rain in Kaili?
On long-term average, Kaili has about 153 days a year with at least 2 mm of rain or snow. The annual total is roughly 1,531 mm.

Weather in nearby cities