Sinop weather in October

In October, Sinop sees average daytime highs of 32°C and overnight lows near 22°C, with 146 mm of rain across 20.2 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 33°C in the first days to 31°C by the end. The sky is clear or mostly clear about 17% 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 Sinop's 6th-clearest and 6th-windiest month. For the whole year in context, see Sinop's year-round climate.

Daytime high
32°
4th warmest
Overnight low
22°
12th coldest
Rainfall
146 mm
20.2 wet days
Daylight
12 h 18 min
6:19 AM – 6:35 PM
Cloud cover
69%
6th clearest
Wind
5 km/h
6th windiest
Solar energy
5.78 kWh/m²
Travel score
3.0
out of 10

Sinop is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 33°C in the first days to 31°C by the end.

A typical October day in Sinop reaches about 32°C in the afternoon and slips back to 22°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 35°C. Set against its neighbours, October runs about 2°C cooler than September and about 2°C warmer than November.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13322
23322
33322
43322
53322
63322
73322
83322
93322
103322
113322
123222
133222
143222
153222
163222
173222
183222
193222
203222
213222
223222
233222
243222
253122
263122
273122
283122
293122
303122
313122

How October really feels in Sinop

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.

Sinop weather by month

How October compares with the rest of the year at a glance. October is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°30528.712.62.9
Feb30° / 22°27926.412.42.8
Mar30° / 22°25627.112.12.9
Apr31° / 22°13019.611.73.6
May31° / 21°316.511.54.7
Jun32° / 20°50.911.35.2
Jul32° / 20°10.411.45.1
Aug34° / 21°71.311.63.9
Sep34° / 22°538.711.93.2
Oct32° / 22°14620.212.33.0
Nov30° / 22°23225.212.52.9
Dec30° / 22°29627.612.73.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 18% of October, with mostly cloudy or overcast conditions the remaining 65%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25050
35050
44852
54753
64654
74555
84456
94357
104258
114159
124060
133961
143763
153763
163664
173466
183367
193169
203070
212971
222872
232773
242575
252575
262377
272377
282278
292179
302080
312080

Chance of precipitation in October

Any precipitation

Sinop gets around 146 mm of rain over 20.2 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 65% and peaks near 79% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
151
252
353
454
555
655
756
857
957
1058
1158
1259
1360
1461
1562
1663
1764
1866
1967
2068
2170
2271
2373
2474
2575
2676
2777
2878
2978
3078
3179

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 82% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1172864
2162865
3152767
4152767
5042670
6042571
7032572
8032473
9032374
10032275
11022276
12022177
13022078
14021979
15021880
16011683
17011584
18011485
19011287
20011188
21011089
2200892
2300793
2400694
2500595
2600595
2700496
2800397
2900397
3000397
3100397

Wind in October

Winds average 5 km/h in October.

Across October, daily wind ranges from about 5 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
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 6:28 AM to 6:13 AM, and sunset from 6:34 PM to 6:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:286:34
212.16:276:34
312.16:276:34
412.16:266:34
512.16:256:34
612.26:256:34
712.26:246:34
812.26:236:34
912.26:236:34
1012.26:226:34
1112.26:226:35
1212.26:216:35
1312.26:216:35
1412.26:206:35
1512.36:196:35
1612.36:196:35
1712.36:186:35
1812.36:186:35
1912.36:186:36
2012.36:176:36
2112.36:176:36
2212.36:166:36
2312.36:166:36
2412.46:156:36
2512.46:156:37
2612.46:156:37
2712.46:146:37
2812.46:146:37
2912.46:146:38
3012.46:136:38
3112.46:136:38

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.78 kWh/m².

For context, solar energy here swings from a low near 4.8 kWh/m² to a high of 5.83 kWh/m² in September across the year — October's 5.78 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in October

Hazard calendar for Sinop

In seasonPeak

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

Sinop's monsoon runs October–March, when most of the year's rain falls.

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

Is October a good time to visit Sinop?

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

3.0
Sightseeing
7th-best month of the year
4.9
Beach & pool
7th-best month of the year

October is a weaker month for outdoor sightseeing in Sinop.

What to pack for Sinop in October

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

In October, Sinop sees daytime highs around 32°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Sinop in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sinop peaks around February 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 14 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 12UV 15Sep 14UV 8
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May10Very high
Jun8Very high
Jul9Very high
Aug10Very high
Sep7Very high
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Sinop 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 Sinop is worst in September — around 60 µg/m³ PM2.5 (unhealthy), about 5.8× the cleanest month (April, 10 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModeratePoorModerateSep 1656 µg/m³Apr 1511 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Good
Mar12Moderate
Apr10Good
May13Moderate
Jun18Moderate
Jul13Moderate
Aug25Moderate
Sep60Unhealthy
Oct29Moderate
Nov17Moderate
Dec12Good
Location & terrain

Where is Sinop?

Sinop sits at 11.9°S, 55.5°W, 378 m above sea level, in Brazil. The nearest listed city is Sorriso, 79 km away.

Topography around Sinop

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

Within 3 km, the terrain around Sinop has only modest variations in elevation — a maximum elevation change of 50 m around an average of 375 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 85 m; within 80 km, only modest variations in elevation — a maximum elevation change of 203 m.

The land around Sinop is covered by artificial surfaces (59%) within 3 km, cropland (53%) and trees (30%) within 16 km, and trees (47%) and cropland (47%) within 80 km.

3 km
50 m
16 km
85 m
80 km
203 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Sorriso 79 km · Colíder 116 km · Lucas do Rio Verde 141 km · Tapurah 147 km · Peixoto de Azevedo 191 km · Matupá 198 km · Guarantã do Norte 222 km · Nova Mutum 227 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 Sinop (-11.8642°, -55.5025°, elevation 378 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).