Rondônia Weather in May

Average temperatures, rainfall, sunshine and the best places to visit in Rondônia, Brazil in May.

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Porto Velho Ariquemes Ji-Paraná Vilhena

Planning a journey to Rondônia, Brazil this May and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in Rondônia in May

Rondônia, Brazil is a region in Brazil. May in Rondônia generally has very warm temperatures, with precipitation levels ranging from moderate to high.

Temperatures

You can expect very warm maximum daytime temperatures of around 31°C (88°F) and nighttime temperatures around 23°C (73°F) in Porto Velho. The temperatures cited for both day and night represent usual averages, but it's possible some days could be hotter. It's advisable to dress accordingly to handle the heat.

To explore the conditions in Rondônia, Brazil in more detail, check the map below.

Precipitation

In May, precipitation varies across different areas. From moderate rainfall in Vilhena with an average of 62 mm (2.4 in) to high rainfall in Porto Velho with 138 mm (5.4 in).

Explore Rondônia by month

Pick a month to see the average temperature, rainfall and sunshine in Rondônia — and find the best time to visit. (based on Porto Velho)

January31°C (88°F) February31°C (88°F) March31°C (88°F) April31°C (88°F) May31°C (88°F) June32°C (90°F) This monthJuly33°C (91°F) August35°C (95°F) September34°C (93°F) October33°C (91°F) November32°C (90°F) December31°C (88°F)
Best Time to Visit Rondônia →

Best Places to Visit in Rondônia in May

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Rondônia.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Rondônia

What is the weather like in May for some of the most popular destinations in Rondônia, Brazil?

Temperature range in Rondônia (May)

Precipitation variation in Rondônia (May)

Porto Velho

In May Porto Velho generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 23°C (73°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« April
May
June »
April
May
June
Max temperature
31°C (88°F)
31°C (88°F)
32°C (90°F)
Min temperature
24°C (75°F)
23°C (73°F)
23°C (73°F)
Monthly rainfall
238 mm (9.4 in)
138 mm (5.4 in)
49 mm (1.9 in)
Monthly rainy days
20 days
15 days
9 days
Weather conditions
poor
tolerable
pleasant
Climate in Porto Velho →

Ariquemes

In May Ariquemes generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 22°C (72°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« April
May
June »
April
May
June
Max temperature
31°C (88°F)
31°C (88°F)
33°C (91°F)
Min temperature
23°C (73°F)
22°C (72°F)
21°C (70°F)
Monthly rainfall
200 mm (7.9 in)
98 mm (3.9 in)
25 mm (1 in)
Monthly rainy days
17 days
13 days
7 days
Weather conditions
poor
pleasant
perfect
Climate in Ariquemes →

Ji-Paraná

In May Ji-Paraná generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 22°C (72°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« April
May
June »
April
May
June
Max temperature
31°C (88°F)
31°C (88°F)
32°C (90°F)
Min temperature
23°C (73°F)
22°C (72°F)
21°C (70°F)
Monthly rainfall
164 mm (6.5 in)
84 mm (3.3 in)
21 mm (0.8 in)
Monthly rainy days
15 days
11 days
7 days
Weather conditions
tolerable
pleasant
perfect
Climate in Ji-Paraná →

Vilhena

In May Vilhena generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 20°C (68°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« April
May
June »
April
May
June
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
21°C (70°F)
20°C (68°F)
19°C (66°F)
Monthly rainfall
140 mm (5.5 in)
62 mm (2.4 in)
17 mm (0.7 in)
Monthly rainy days
12 days
9 days
5 days
Weather conditions
tolerable
pleasant
perfect
Climate in Vilhena →

Cacoal

In May Cacoal generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 21°C (70°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« April
May
June »
April
May
June
Max temperature
31°C (88°F)
31°C (88°F)
32°C (90°F)
Min temperature
22°C (72°F)
21°C (70°F)
20°C (68°F)
Monthly rainfall
161 mm (6.3 in)
78 mm (3.1 in)
18 mm (0.7 in)
Monthly rainy days
14 days
10 days
6 days
Weather conditions
tolerable
pleasant
perfect
Climate in Cacoal →

Is your destination not in the list? Have a look at all destinations in Rondônia, in Brazil.

Popular cities in May

Day & night temperatures, rainfall and average weather in Rondônia in May.

City Weather Day temp Night temp Rainfall
Porto Velho 31°C (88°F) 23°C (73°F) 138 mm (5.4 in)
Ariquemes 31°C (88°F) 22°C (72°F) 98 mm (3.9 in)
Ji-Paraná 31°C (88°F) 22°C (72°F) 84 mm (3.3 in)
Vilhena 30°C (86°F) 20°C (68°F) 62 mm (2.4 in)
Cacoal 31°C (88°F) 21°C (70°F) 78 mm (3.1 in)
Rondônia 31°C (88°F) 22°C (72°F) 84 mm (3.3 in)

Rondônia weather in May: frequently asked questions

What is the weather like in Rondônia, Brazil in May?

In May, Rondônia, Brazil generally has unpleasant weather conditions. Porto Velho sees daytime temperatures near 31°C (88°F), with nights cooling to roughly 23°C (73°F).

What is the average temperature in Rondônia, Brazil in May?

Daytime temperatures in Porto Velho peak at roughly 31°C (88°F) in May, dropping to about 23°C (73°F) overnight.

Does Rondônia, Brazil get a lot of rain in May?

Rondônia, Brazil sees substantial rainfall in May. Porto Velho typically averages about 138 mm (5.4 in), a mix of wet and dry days, but bring an umbrella.

Is May a Good Time to Visit Rondônia, Brazil?

Given the typically tolerable weather conditions in Porto Velho, May might be a good time to visit Rondônia, Brazil. It's worth noting that weather conditions might differ depending on the location you visit.

On average, the best time to visit Rondônia, Brazil is in June and July with generally tolerable weather in Porto Velho. The weather in January, February, March, April, August, September, October, November and December, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Rondônia.

Weather and climate has detailed information for every country in the world. Are you going to Brazil? Get detailed historical weather averages for many cities in Brazil.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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