Guajará Mirim weather in October

In October, Guajará Mirim sees average daytime highs of 33°C and overnight lows near 23°C, with 151 mm of rain across 20.8 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 11% of the time in October, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of October to 12 h 24 min by month's end. Set against the rest of the year, October is Guajará Mirim's 6th-clearest and 8th-windiest month. For the whole year in context, see Guajará Mirim's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
23°
7th coldest
Rainfall
151 mm
20.8 wet days
Daylight
12 h 12 min
5:59 AM – 6:14 PM
Cloud cover
74%
6th clearest
Wind
6 km/h
8th windiest
Solar energy
5.54 kWh/m²
Travel score
2.7
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical October day in Guajará Mirim reaches about 33°C in the afternoon and slips back to 23°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 36°C. Set against its neighbours, October runs on par with September and about 1°C warmer than November.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13323
23323
33323
43323
53323
63323
73323
83323
93323
103323
113323
123323
133323
143323
153323
163323
173323
183323
193323
203223
213223
223223
233223
243223
253223
263223
273223
283223
293223
303223
313223

How October really feels in Guajará Mirim

Once humidity and wind are folded in, October averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in October is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Guajará Mirim weather by month

How October compares with the rest of the year at a glance. October is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°26527.512.62.8
Feb30° / 23°2562512.42.8
Mar30° / 23°25727.212.12.8
Apr30° / 23°16522.911.83.2
May30° / 22°8115.511.54.3
Jun30° / 21°336.811.45.3
Jul31° / 20°214.111.45.2
Aug33° / 21°365.611.64.0
Sep33° / 22°8513.711.93.1
Oct33° / 23°15120.812.22.7
Nov31° / 23°20723.812.52.7
Dec31° / 23°26327.112.62.7

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 17% of October, with mostly cloudy or overcast conditions the remaining 73%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
23961
33961
43961
53862
63862
73664
83664
93565
103466
113268
123169
133169
142971
152971
162773
172674
182674
192476
202377
212278
222080
232080
241981
251981
261783
271684
281684
291585
301585
311585

Chance of precipitation in October

Any precipitation

Guajará Mirim gets around 151 mm of rain over 20.8 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 66% and peaks near 75% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
160
260
361
462
562
662
763
863
963
1063
1162
1262
1363
1463
1563
1664
1765
1866
1966
2067
2169
2270
2371
2471
2572
2673
2774
2874
2975
3075
3175

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the oppressive band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11287712
21187812
31187713
41177813
51177714
61167814
71167715
81167715
91067716
101057816
110057817
120057817
130047818
140047818
150047719
160037720
170037621
180027721
190027622
200027523
210027424
220017524
230017425
240017425
250017326
260017326
270027127
280027127
290027127
300027028
310026929

Wind in October

Winds average 6 km/h in October.

Across October, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 06 min at the start of October to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over October. Sunrise moves from 6:07 AM to 5:53 AM, and sunset from 6:13 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:076:13
212.16:076:13
312.16:066:13
412.16:066:13
512.16:056:13
612.16:046:13
712.26:046:13
812.26:036:13
912.26:036:13
1012.26:026:13
1112.26:026:13
1212.26:016:13
1312.26:016:13
1412.26:006:14
1512.26:006:14
1612.25:596:14
1712.35:596:14
1812.35:586:14
1912.35:586:14
2012.35:576:14
2112.35:576:14
2212.35:566:14
2312.35:566:15
2412.35:566:15
2512.35:556:15
2612.35:556:15
2712.35:556:15
2812.45:546:16
2912.45:546:16
3012.45:546:16
3112.45:536:16

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.54 kWh/m².

For context, solar energy here swings from a low near 4.27 kWh/m² to a high of 5.6 kWh/m² in September across the year — October's 5.54 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.3Bright
315.3Bright
Planning a trip in October

Hazard calendar for Guajará Mirim

In seasonPeak

In October, Guajará Mirim sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Guajará Mirim's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Guajará Mirim?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.7
Sightseeing
10th-best month of the year
4.7
Beach & pool
6th-best month of the year

October is a weaker month for outdoor sightseeing in Guajará Mirim.

What to pack for Guajará Mirim in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Guajará Mirim sees daytime highs around 33°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

UV index in Guajará Mirim in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Guajará Mirim peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 13 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 20UV 15Sep 13UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul8Very high
Aug7High
Sep4Moderate
Oct12Extreme
Nov13Extreme
Dec14Extreme

Air quality in Guajará Mirim in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Guajará Mirim is worst in September — around 78 µg/m³ PM2.5 (unhealthy), about 9.3× the cleanest month (May, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

020406080JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateUnhealthyModerateSep 1275 µg/m³May 218 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb13Moderate
Mar13Moderate
Apr10Good
May8Good
Jun9Good
Jul16Moderate
Aug63Unhealthy
Sep78Unhealthy
Oct29Moderate
Nov17Moderate
Dec12Moderate
Location & terrain

Where is Guajará Mirim?

Guajará Mirim sits at 10.8°S, 65.3°W, 131 m above sea level, in Brazil. The nearest listed city is Guayaramerín, 5.0 km away.

Alto ParaísoAriquemes

Topography around Guajará Mirim

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Guajará Mirim.

Within 3 km, the terrain around Guajará Mirim has only modest variations in elevation — a maximum elevation change of 44 m around an average of 124 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 247 m; within 80 km, significant variations in elevation — a maximum elevation change of 365 m.

The land around Guajará Mirim is covered by trees (37%), artificial surfaces (24%) and water (20%) within 3 km, grassland (48%) and trees (44%) within 16 km, and trees (84%) within 80 km.

3 km
44 m
16 km
247 m
80 km
365 m
treesgrasslandartificial surfaceswaterwetland
October weather nearby: Guayaramerín 5.0 km · Nova Mamoré 42 km · Riberalta 82 km · Buritis 177 km · Plácido de Castro 208 km · São Francisco do Guaporé 239 km · Alto Paraíso 251 km · Ariquemes 269 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Guajará Mirim (-10.7836°, -65.3355°, elevation 131 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).