Alta Floresta d'Oeste weather in May

In May, Alta Floresta d'Oeste sees average daytime highs of 29°C and overnight lows near 20°C, with 69 mm of rain across 13.3 wet days and about 11.5 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 24% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 36 min at the start of May to 11 h 24 min by month's end. Set against the rest of the year, May is Alta Floresta d'Oeste's 5th-clearest and 5th-windiest month. For the whole year in context, see Alta Floresta d'Oeste's year-round climate.

Daytime high
29°
10th warmest
Overnight low
20°
4th coldest
Rainfall
69 mm
13.3 wet days
Daylight
11 h 30 min
6:21 AM – 5:48 PM
Cloud cover
63%
5th clearest
Wind
6 km/h
5th windiest
Solar energy
4.48 kWh/m²
Travel score
5.1
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical May day in Alta Floresta d'Oeste reaches about 29°C in the afternoon and slips back to 20°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 31°C. Set against its neighbours, May runs on par with April and on par with June.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12921
22921
32921
42921
52921
62921
72921
82921
92921
102921
112921
122921
132921
142921
152920
162920
172920
182920
192920
202920
212920
222920
232920
242920
252920
262920
272920
282920
292920
302920
312920

How May really feels in Alta Floresta d'Oeste

Once humidity and wind are folded in, May averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Alta Floresta d'Oeste weather by month

How May compares with the rest of the year at a glance. May is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°30028.712.63.0
Feb29° / 22°28826.312.43.0
Mar29° / 22°28028.512.13.1
Apr29° / 21°15021.911.73.8
May29° / 20°6913.311.55.1
Jun30° / 20°183.811.36.2
Jul31° / 19°122.611.45.9
Aug32° / 20°274.911.64.8
Sep32° / 21°8112.811.93.7
Oct31° / 22°16321.612.33.2
Nov30° / 22°2332512.63.1
Dec29° / 22°27327.612.73.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 56%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23466
33664
43565
53565
63664
73664
83862
93862
103961
113862
124060
134060
144060
154159
164258
174258
184357
194555
204555
214753
224852
235050
245149
255248
265446
275545
285842
295941
306139
316238

Chance of precipitation in May

Any precipitation

Alta Floresta d'Oeste gets around 69 mm of rain over 13.3 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 43% and peaks near 54% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
154
253
352
451
550
649
749
848
948
1047
1147
1246
1346
1445
1545
1645
1744
1843
1943
2042
2141
2240
2338
2437
2536
2635
2733
2832
2931
3029
3128

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 64% of days. Sticky, muggy-or-worse air turns up on roughly 88% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11251478
22251576
32261575
42261674
52261773
62261773
72261872
83261970
93262069
103262168
113272167
123272266
133272266
143272365
153272365
162272465
172272465
182272564
192272663
202282662
211282762
221282861
231292860
241292959
2512102958
2612103057
2712113155
2812113254
2913123351
3013133450
3103133648

Wind in May

Winds average 6 km/h in May.

Across May, 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 May

DaylightNight

Daylight runs from about 11 h 36 min at the start of May to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over May. Sunrise moves from 6:18 AM to 6:25 AM, and sunset from 5:52 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:185:52
211.66:185:52
311.66:185:52
411.66:185:51
511.56:185:51
611.56:185:50
711.56:195:50
811.56:195:50
911.56:195:49
1011.56:195:49
1111.56:195:49
1211.56:205:49
1311.56:205:48
1411.56:205:48
1511.56:205:48
1611.56:215:48
1711.46:215:47
1811.46:215:47
1911.46:215:47
2011.46:225:47
2111.46:225:47
2211.46:225:47
2311.46:225:46
2411.46:235:46
2511.46:235:46
2611.46:235:46
2711.46:235:46
2811.46:245:46
2911.46:245:46
3011.46:245:46
3111.46:255:46

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.48 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.48 kWh/m² to a high of 5.76 kWh/m² in October across the year — May's 4.48 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in May

Hazard calendar for Alta Floresta d'Oeste

In seasonPeak

None of Alta Floresta d'Oeste's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Alta Floresta d'Oeste's monsoon runs October–April, when most of the year's rain falls.

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

Is May a good time to visit Alta Floresta d'Oeste?

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

5.1
Sightseeing
3rd-best month of the year
6.5
Beach & pool
4th-best month of the year

May is a reasonable time to visit Alta Floresta d'Oeste for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Alta Floresta d'Oeste in May

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

In May, Alta Floresta d'Oeste sees daytime highs around 29°C and nights near 20°C. Pack light clothes. Worth having: rain gear. About 13 days see rain.

light clothesrain gear

UV index in Alta Floresta d'Oeste in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Alta Floresta d'Oeste peaks around January 23 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 15 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 23UV 16Sep 15UV 4
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul8Very high
Aug9Very high
Sep3Moderate
Oct11Extreme
Nov14Extreme
Dec14Extreme

Air quality in Alta Floresta d'Oeste in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Alta Floresta d'Oeste is worst in September — around 53 µg/m³ PM2.5 (poor), about 6.9× the cleanest month (June, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateSep 1450 µg/m³Jun 178 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Good
Mar12Good
Apr9Good
May8Good
Jun8Good
Jul8Good
Aug34Moderate
Sep53Poor
Oct23Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Alta Floresta d'Oeste?

Alta Floresta d'Oeste sits at 12.0°S, 62.0°W, 350 m above sea level, in Brazil. The nearest listed city is Rolim de Moura, 25 km away.

Topography around Alta Floresta d'Oeste

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Alta Floresta d'Oeste.

Within 3 km, the terrain around Alta Floresta d'Oeste has only modest variations in elevation — a maximum elevation change of 160 m around an average of 368 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 249 m; within 80 km, significant variations in elevation — a maximum elevation change of 396 m.

The land around Alta Floresta d'Oeste is covered by grassland (71%) and trees (26%) within 3 km, grassland (72%) and trees (26%) within 16 km, and grassland (55%) and trees (43%) within 80 km.

3 km
160 m
16 km
249 m
80 km
396 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Rolim de Moura 25 km · Cacoal 81 km · São Miguel do Guaporé 88 km · Presidente Médici 88 km · Pimenta Bueno 89 km · Espigão dOeste 114 km · Ji Paraná 120 km · Rolim de Moura do Guaporé 129 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 Alta Floresta d'Oeste (-11.9681°, -61.9542°, elevation 350 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).