WeatherJourney.com

An Nhơn weather by month: averages, rainfall & climate trends

An Nhơn is warm in every month of the year; the seasonal dip amounts to just 7.1°C. Rainfall leans toward the stretch from September to December. An Nhơn weather by month: average temperatures, rainfall, extremes and how the climate has changed since 1940.

Today vs average

+1.0°Chigh near average

30° / 26°Today
29° / 24°Average
see today in detail →

How it's changed

+1.9°Caverage temperature, 2016–2025 vs 1940–1949average temperature vs 1940–49221days above 30°C a year now (2016–2025) · 173 in the 1940sdays above 30°C · 173 in the 1940s+1.9°C vs the 1940s · see how it's changed →
Weather by montha typical year, averaged over the full recordJanuary, rain 79 mmhigh 25°low 20°February, rain 48 mmhigh 27°low 21°March, rain 51 mmhigh 29°low 23°April, rain 59 mmhigh 32°low 25°May, rain 115 mmhigh 33°low 26°June, rain 90 mmhigh 34°low 27°July, rain 80 mmhigh 34°low 27°August, rain 96 mmhigh 34°low 27°September, rain 202 mmhigh 32°low 25°October, rain 277 mmhigh 29°low 24°November, rain 296 mmhigh 27°low 23°December, rain 175 mmhigh 26°low 21°wettest month November, 296 mm · 1,567 mm a yearsee month by month →

Right now

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

Right now

25.7°

32°feels like
94%humidity
25°dew point
2 km/hfrom NW
UV index0.0
sunrise05:35sunset17:20day length11h 46m
WedShowers30°26°
ThuShowers31°25°
FriMostly clear32°25°
SatPartly cloudy33°24°
SunOvercast31°24°
MonMostly clear33°24°
TuePartly cloudy30°25°

On this date: October 20

Today (forecast)
30° / 26°
Average for October 20
29° / 24°

High near average · +1.0°C

  • Highest since 1940: 33.5° · 2016
  • Lowest since 1940: 21.0° · 1989
  • One year ago: 29° / 26°

Every October 20 in history, coldest to hottest

▲ Daily highs▼ Daily lows

Dots show daily highs (top) and lows (bottom) for each October 20 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 An Nhơn is sampled from the ECMWF ERA5 reanalysis at 13.89°N, 109.11°E, with daily records since 1940.

Coordinates
13.89°N, 109.11°E
Time zone
Asia/Ho Chi Minh
Period
1940–2026
Data source
ERA5 (ECMWF)

Last 30 days

24 of the last 31 days were warmer than the historical average for that date. Average difference: +0.8°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 June, at around 33.9°C by mid-afternoon, with nights around 26.9°C. At the other extreme, January brings afternoon highs of about 25.5°C and typical overnight lows of 20.3°C.

The yearly total for An Nhơn comes to about 1,567 mm; monthly amounts range from 48 mm in February up to 296 mm in November.

Comparing the record's first decade with its most recent one, An Nhơn now averages 1.9°C warmer than it did in the 1940s. Recent years have brought more rain as well. The last decade sits roughly 12% over the long-term average.

Climate graph (climograph)

June is the warmest month, January the coolest: a yearly swing of 7°C. Wettest month: November (~296 mm). Whole year averages ~1,567 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.

An Nhơn 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 lowRainDaylightHighestLowest
January25.5°20.3°79 mm11.3 h33.1° (1998)13.9° (1940)
February26.8°20.8°48 mm11.6 h34.1° (2010)15.3° (1954)
March29.2°22.5°51 mm11.9 h35.3° (1998)14.8° (1963)
April31.6°24.6°59 mm12.3 h38.0° (1975)18.5° (1945)
May33.3°26.1°115 mm12.6 h38.3° (2001)21.5° (1943)
June33.9°26.9°90 mm12.8 h38.4° (2019)23.7° (1955)
July33.9°26.7°80 mm12.7 h37.9° (2001)23.4° (1985)
August33.6°26.5°96 mm12.5 h38.7° (2019)23.2° (1976)
September32.2°25.4°202 mm12.1 h37.7° (2016)21.7° (1966)
October29.4°24.3°277 mm11.7 h35.8° (2024)19.6° (1978)
November27.5°23.1°296 mm11.3 h33.1° (1990)16.3° (1955)
December25.8°21.4°175 mm11.2 h31.3° (1974)15.0° (1999)

How it's changed

Year-by-year signals from 1940 to today.

Climate stripes

Annual mean shifted from 1940–1949 to 2016–2025 by +1.9°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: +0.22°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

Sep–Nov is warming fastest: +0.25°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: 172.8 early in the record → 221.3 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

Hottest day since 1940 in 2019, coldest in 1940: 38.7°C / 13.9°C.

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

Annual rainfall

~1,567 mm/year on average. Last decade: +12% vs that average. Long-term trend: +53 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 An Nhơn

Which is the warmest month in An Nhơn?
On long-term average, the warmest month in An Nhơn is June (mean daily temperature of about 29.8°C) and the coolest is January (about 22.7°C).
How does today's temperature in An Nhơn compare to the historical average?
On October 20, 2026, An Nhơn is forecast to reach a high of 30.2°C and a low of 25.5°C. The long-term average for this date (the full record since 1940) is a high of 29.2°C and a low of 24.1°C, so today's high is 1.0°C warmer than that average.
How much has An Nhơn warmed since 1940?
Comparing the first decade of the record (1940–1949) with the most recent (2016–2025), the annual mean temperature in An Nhơn is about 1.9°C warmer.
How much does it rain in An Nhơn?
An Nhơn receives about 1,567 mm of precipitation per year on long-term average, with November typically the wettest month.
What is the average temperature in An Nhơn?
Over the full record (since 1940), the annual mean temperature in An Nhơn is about 26.7°C. The warmest month is June and the coolest is January.
What are the average temperatures in An Nhơn by month?
Average daily highs and lows for each month in An Nhơn (°C, full record since 1940): January 25°/20°, February 27°/21°, March 29°/23°, April 32°/25°, May 33°/26°, June 34°/27°, July 34°/27°, August 34°/27°, September 32°/25°, October 29°/24°, November 27°/23°, December 26°/21°.

Weather in nearby cities