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Montes Claros weather by month: averages, rainfall & climate trends

Warmth in Montes Claros is remarkably steady: only 4.5°C separates the warmest month from the coolest, so there is no cold season to speak of. Rainfall is strongly seasonal: the bulk of the year's rain falls between October and March. Montes Claros weather by month: average temperatures, rainfall, extremes and how the climate has changed since 1940.

Today vs average

+4.4°Chigh well above average

34° / 22°Today
30° / 20°Average
see today in detail →

How it's changed

+1.7°Caverage temperature, 2016–2025 vs 1940–1949average temperature vs 1940–49185days above 30°C a year now (2016–2025) · 60 in the 1940sdays above 30°C · 60 in the 1940s+1.7°C vs the 1940s · see how it's changed →
Weather by montha typical year, averaged over the full recordJanuary, rain 151 mmhigh 29°low 20°February, rain 104 mmhigh 29°low 20°March, rain 119 mmhigh 29°low 20°April, rain 49 mmhigh 28°low 19°May, rain 15 mmhigh 27°low 17°June, rain 5 mmhigh 27°low 15°July, rain 3 mmhigh 27°low 15°August, rain 4 mmhigh 28°low 16°September, rain 19 mmhigh 30°low 18°October, rain 93 mmhigh 30°low 20°November, rain 202 mmhigh 29°low 20°December, rain 215 mmhigh 28°low 20°wettest month December, 215 mm · 979 mm a yearsee month by month →

Right now

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

Right now

21.6°

25°feels like
89%humidity
20°dew point
5 km/hfrom SE
UV index0.0
sunrise05:23sunset17:56day length12h 33m
TodayPartly cloudy34°22°
WedMostly clear34°21°
ThuPartly cloudy34°21°
FriPartly cloudy35°22°
SatPartly cloudy38°23°
SunPartly cloudy39°26°
MonOvercast37°26°

On this date: October 20

Today (forecast)
34° / 22°
Average for October 20
30° / 20°

High well above average · +4.4°C

  • Highest since 1940: 38.1° · 1987
  • Lowest since 1940: 15.8° · 2025
  • One year ago: 23° / 16°

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 Montes Claros is sampled from the ECMWF ERA5 reanalysis at 16.73°S, 43.86°W, with daily records since 1940.

Coordinates
16.73°S, 43.86°W
Time zone
America/Sao Paulo
Period
1940–2026
Data source
ERA5 (ECMWF)

Last 30 days

30 of the last 31 days were warmer than the historical average for that date. Average difference: +2.9°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

October brings the year's peak warmth, with afternoons typically reaching 30.4°C and nights around 19.7°C. The coolest month is July, when afternoons reach about 26.5°C and overnight lows sit around 14.8°C.

The yearly total for Montes Claros comes to about 979 mm; monthly amounts range from 3 mm in July up to 215 mm in December.

Over the full record (since 1940), the annual mean temperature in Montes Claros has risen by 1.7°C between its first decade and its last. Days above 30°C have grown noticeably more frequent, from around 60 a year in the first decade to about 185 in the last.

Climate graph (climograph)

October is the warmest month, July the coolest: a yearly swing of 4°C. Wettest month: December (~215 mm). Whole year averages ~979 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.

Montes Claros 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
January29.1°20.0°151 mm12.9 h36.8° (2016)16.1° (1943)
February29.5°20.0°104 mm12.5 h36.4° (1999)16.6° (1968)
March29.1°19.8°119 mm12.1 h35.4° (2013)14.6° (1968)
April28.4°18.8°49 mm11.6 h35.0° (2015)12.1° (1968)
May27.5°17.0°15 mm11.2 h34.2° (1998)6.2° (2022)
June26.7°15.4°5 mm11.0 h34.8° (2016)8.9° (1942)
July26.5°14.8°3 mm11.1 h33.5° (2006)8.3° (1967)
August28.3°15.7°4 mm11.4 h35.0° (2016)9.7° (1951)
September30.3°17.7°19 mm11.9 h39.5° (2023)11.7° (1968)
October30.4°19.7°93 mm12.4 h39.7° (2015)13.9° (1973)
November28.6°19.8°202 mm12.8 h39.2° (2023)14.5° (1986)
December28.4°19.9°215 mm13.0 h36.7° (2015)14.7° (1963)

How it's changed

Year-by-year signals from 1940 to today.

Climate stripes

Annual mean shifted from 1940–1949 to 2016–2025 by +1.7°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: +0.23°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: +0.28°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: 60.2 early in the record → 184.9 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 2015, coldest in 2022: 39.7°C / 6.2°C.

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

Annual rainfall

~979 mm/year on average. Last decade: −14% vs that average. Long-term trend: −35 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 Montes Claros

Which is the warmest month in Montes Claros?
On long-term average, the warmest month in Montes Claros is October (mean daily temperature of about 24.8°C) and the coolest is July (about 20.3°C).
How does today's temperature in Montes Claros compare to the historical average?
On October 20, 2026, Montes Claros is forecast to reach a high of 34.3°C and a low of 21.7°C. The long-term average for this date (the full record since 1940) is a high of 29.9°C and a low of 19.8°C, so today's high is 4.4°C warmer than that average.
How much has Montes Claros warmed since 1940?
Comparing the first decade of the record (1940–1949) with the most recent (2016–2025), the annual mean temperature in Montes Claros is about 1.7°C warmer.
How much does it rain in Montes Claros?
Montes Claros receives about 979 mm of precipitation per year on long-term average, with December typically the wettest month.
What is the average temperature in Montes Claros?
Over the full record (since 1940), the annual mean temperature in Montes Claros is about 23.1°C. The warmest month is October and the coolest is July.
What are the average temperatures in Montes Claros by month?
Average daily highs and lows for each month in Montes Claros (°C, full record since 1940): January 29°/20°, February 29°/20°, March 29°/20°, April 28°/19°, May 27°/17°, June 27°/15°, July 27°/15°, August 28°/16°, September 30°/18°, October 30°/20°, November 29°/20°, December 28°/20°.

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