Climate Insights for Vilhena

Região Geográfica Intermediária de Ji-Paraná, Rondônia, Brazil

Hottest
September
33°C peak91°F peak
Coldest
July
18°C low65°F low
Wettest
December
299 mm rain11.8 in rain
Best to Visit
May, June, July
Mild temps & low rain

Climate Overview

The climate in Vilhena is warm and mild. The average annual temperature is 24°C and approximately 1,724 mm of precipitation falls per year. December is the wettest month, receiving around 299 mm of rainfall. Vilhena is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: September, August, July. The coldest months are July, June, May, when temperatures can drop to 18°C.The climate in Vilhena is warm and mild. The average annual temperature is 76°F and approximately 67.9 in of precipitation falls per year. December is the wettest month, receiving around 11.8 in of rainfall. Vilhena is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: September, August, July. The coldest months are July, June, May, when temperatures can drop to 65°F.

Temperature

0°10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 28°Average: 24°Min: 21°FebMax: 28°Average: 24°Min: 21°MarMax: 28°Average: 24°Min: 21°AprMax: 29°Average: 24°Min: 21°MayMax: 29°Average: 24°Min: 20°JunMax: 29°Average: 23°Min: 19°JulMax: 31°Average: 24°Min: 18°AugMax: 32°Average: 25°Min: 20°SepMax: 33°Average: 26°Min: 22°OctMax: 31°Average: 25°Min: 22°NovMax: 29°Average: 25°Min: 21°DecMax: 28°Average: 24°Min: 21°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°F90°F100°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 83°FAverage: 75°FMin: 71°FFebMax: 83°FAverage: 75°FMin: 71°FMarMax: 83°FAverage: 76°FMin: 71°FAprMax: 84°FAverage: 76°FMin: 70°FMayMax: 84°FAverage: 75°FMin: 68°FJunMax: 84°FAverage: 74°FMin: 66°FJulMax: 87°FAverage: 75°FMin: 65°FAugMax: 90°FAverage: 78°FMin: 68°FSepMax: 91°FAverage: 79°FMin: 71°FOctMax: 87°FAverage: 78°FMin: 71°FNovMax: 84°FAverage: 76°FMin: 70°FDecMax: 83°FAverage: 75°FMin: 71°F
Max
Average
Min

Vilhena sees moderate temperature variation throughout the year, ranging from 18°C to 33°C. The warmest month is September, when average highs reach 33°C and the mean temperature sits around 26°C. July is the coolest month, with minimum temperatures around 18°C and an average of 24°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.Vilhena sees moderate temperature variation throughout the year, ranging from 65°F to 91°F. The warmest month is September, when average highs reach 91°F and the mean temperature sits around 79°F. July is the coolest month, with minimum temperatures around 65°F and an average of 75°F. On average, daily temperatures fluctuate by about 16°F between overnight lows and afternoon highs.

Precipitation

0mm50mm100mm150mm200mm250mm300mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 246mmFebPrecipitation: 282mmMarPrecipitation: 243mmAprPrecipitation: 133mmMayPrecipitation: 43mmJunPrecipitation: 23mmJulPrecipitation: 0mmAugPrecipitation: 21mmSepPrecipitation: 64mmOctPrecipitation: 147mmNovPrecipitation: 222mmDecPrecipitation: 299mm
Precipitation
0in2in4in6in8in10in12inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 9.7inFebPrecipitation: 11.1inMarPrecipitation: 9.6inAprPrecipitation: 5.2inMayPrecipitation: 1.7inJunPrecipitation: 0.9inJulPrecipitation: 0inAugPrecipitation: 0.8inSepPrecipitation: 2.5inOctPrecipitation: 5.8inNovPrecipitation: 8.8inDecPrecipitation: 11.8in
Precipitation

Vilhena is a fairly wet location, receiving approximately 1,724 mm of precipitation annually, which averages out to around 144 mm per month. The wettest month is December, averaging 299 mm of rainfall. February and January also tend to see above-average precipitation. The driest month is July, with just 0 mm. That's 298 mm less than December, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.Vilhena is a fairly wet location, receiving approximately 67.9 in of precipitation annually, which averages out to around 5.7 in per month. The wettest month is December, averaging 11.8 in of rainfall. February and January also tend to see above-average precipitation. The driest month is July, with just 0 in. That's 11.7 in less than December, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Wind

0km/h5km/h10km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 7km/hFebWind Speed: 6km/hMarWind Speed: 6km/hAprWind Speed: 6km/hMayWind Speed: 7km/hJunWind Speed: 7km/hJulWind Speed: 8km/hAugWind Speed: 8km/hSepWind Speed: 7km/hOctWind Speed: 7km/hNovWind Speed: 6km/hDecWind Speed: 7km/h
Wind Speed
0mph5mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 4mphFebWind Speed: 4mphMarWind Speed: 4mphAprWind Speed: 4mphMayWind Speed: 4mphJunWind Speed: 5mphJulWind Speed: 5mphAugWind Speed: 5mphSepWind Speed: 4mphOctWind Speed: 4mphNovWind Speed: 4mphDecWind Speed: 4mph
Wind Speed

Vilhena is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.Vilhena is relatively calm, with an average annual wind speed of 4mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is July, averaging 5mph, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 4mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1mph gap between the calmest and windiest months.

Best Time to Visit

Jan24°75°F
Feb24°75°F
Mar24°76°F
Apr24°76°F
May24°75°F
Jun23°74°F
Jul24°75°F
Aug25°78°F
Sep26°79°F
Oct25°78°F
Nov25°76°F
Dec24°75°F

The best time to visit Vilhena is during May, June and July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 22 mm per month. By contrast, September can be uncomfortably hot with temperatures reaching 33°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.The best time to visit Vilhena is during May, June and July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 74°F with modest rainfall averaging 0.9 in per month. By contrast, September can be uncomfortably hot with temperatures reaching 91°F. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

Monthly Climate Data

The table below shows monthly climate averages for Vilhena based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Vilhena based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
21 °C71 °F
28 °C83 °F
7 km/h4 mph
246 mm9.7 in
0 cm0 in
Feb
21 °C71 °F
28 °C83 °F
6 km/h4 mph
282 mm11.1 in
0 cm0 in
Mar
21 °C71 °F
28 °C83 °F
6 km/h4 mph
243 mm9.6 in
0 cm0 in
Apr
21 °C70 °F
29 °C84 °F
6 km/h4 mph
133 mm5.2 in
0 cm0 in
May
20 °C68 °F
29 °C84 °F
7 km/h4 mph
43 mm1.7 in
0 cm0 in
Jun
19 °C66 °F
29 °C84 °F
7 km/h5 mph
23 mm0.9 in
0 cm0 in
Jul
18 °C65 °F
31 °C87 °F
8 km/h5 mph
0 mm0 in
0 cm0 in
Aug
20 °C68 °F
32 °C90 °F
8 km/h5 mph
21 mm0.8 in
0 cm0 in
Sep
22 °C71 °F
33 °C91 °F
7 km/h4 mph
64 mm2.5 in
0 cm0 in
OctCurrent
22 °C71 °F
31 °C87 °F
7 km/h4 mph
147 mm5.8 in
0 cm0 in
Nov
21 °C70 °F
29 °C84 °F
6 km/h4 mph
222 mm8.8 in
0 cm0 in
Dec
21 °C71 °F
28 °C83 °F
7 km/h4 mph
299 mm11.8 in
0 cm0 in