Senador Guiomard weather in May

In May, Senador Guiomard sees average daytime highs of 30°C and overnight lows near 21°C, with 89 mm of rain across 15.6 wet days and about 11.5 hours of daylight. It is the 12th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 15% 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 30 min by month's end. Set against the rest of the year, May is Senador Guiomard's 5th-clearest and 10th-windiest month. For the whole year in context, see Senador Guiomard's year-round climate.

Daytime high
30°
12th warmest
Overnight low
21°
4th coldest
Rainfall
89 mm
15.6 wet days
Daylight
11 h 30 min
5:41 AM – 5:13 PM
Cloud cover
69%
5th clearest
Wind
6 km/h
10th windiest
Solar energy
4.25 kWh/m²
Travel score
4.4
out of 10

Senador Guiomard is brasilian municipality.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical May day in Senador Guiomard reaches about 30°C in the afternoon and slips back to 21°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°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)
13022
23022
33022
43022
53022
63022
73022
83022
93021
103021
113021
123021
133021
143021
153021
163021
173021
183021
193021
203021
213021
223021
233021
243021
253021
263021
273021
283021
293021
303021
313021

How May really feels in Senador Guiomard

Once humidity and wind are folded in, May 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 May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Senador Guiomard weather by month

How May compares with the rest of the year at a glance. May is the 12th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°26026.912.52.8
Feb30° / 23°24124.712.32.8
Mar30° / 23°2482712.12.8
Apr30° / 22°16421.911.83.3
May30° / 21°8915.611.54.4
Jun30° / 20°427.811.45.2
Jul31° / 19°275.411.55.2
Aug33° / 20°446.811.74.1
Sep33° / 22°8913.211.93.2
Oct32° / 23°1592012.22.9
Nov31° / 23°22123.312.52.8
Dec30° / 23°25826.112.62.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 67%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22377
32476
42674
52674
62674
72773
82971
92971
102971
112971
123070
133268
143268
153268
163367
173367
183367
193565
203565
213664
223763
233763
243961
253961
264060
274159
284258
294456
304555
314654

Chance of precipitation in May

Any precipitation

Senador Guiomard gets around 89 mm of rain over 15.6 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 50% and peaks near 60% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
160
259
358
457
557
656
755
855
955
1054
1154
1253
1353
1452
1552
1651
1751
1850
1949
2049
2148
2247
2346
2445
2544
2643
2742
2841
2940
3039
3138

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 61% of days. Sticky, muggy-or-worse air turns up on roughly 93% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
12486026
22496025
32496124
434106023
534106023
634106122
734116022
844115922
944116021
1044125921
1144125921
1244126020
1344126020
1444135920
1544136019
1634136119
1734146019
1834146118
1934146118
2034156117
2124156316
2224166315
2325166314
2425166413
2525166413
2625176412
2725176511
2825176511
2925176610
3025176610
312617669

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 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over May. Sunrise moves from 5:39 AM to 5:45 AM, and sunset from 5:18 PM to 5:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:395:18
211.65:395:17
311.65:395:17
411.65:395:16
511.65:395:16
611.65:395:16
711.65:405:15
811.65:405:15
911.65:405:15
1011.65:405:15
1111.65:405:14
1211.65:405:14
1311.65:415:14
1411.55:415:14
1511.55:415:13
1611.55:415:13
1711.55:415:13
1811.55:425:13
1911.55:425:13
2011.55:425:13
2111.55:425:13
2211.55:425:12
2311.55:435:12
2411.55:435:12
2511.55:435:12
2611.55:435:12
2711.55:445:12
2811.55:445:12
2911.55:445:12
3011.55:445:12
3111.55:455:12

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.25 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.25 kWh/m² to a high of 5.57 kWh/m² in September across the year — May's 4.25 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.1Bright
294.1Bright
304.1Bright
314.2Bright
Planning a trip in May

Hazard calendar for Senador Guiomard

In seasonPeak

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

Senador Guiomard'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 May a good time to visit Senador Guiomard?

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

4.4
Sightseeing
3rd-best month of the year
5.9
Beach & pool
4th-best month of the year

May is a reasonable time to visit Senador Guiomard for sightseeing.

What to pack for Senador Guiomard in May

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

In May, Senador Guiomard sees daytime highs around 30°C and nights near 21°C. Pack light clothes and rain gear. About 16 days see rain.

light clothesrain gear

UV index in Senador Guiomard in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Senador Guiomard peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 12 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateExtremeJan 20UV 15Sep 12UV 5
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May11Extreme
Jun9Very high
Jul8Very high
Aug6High
Sep4Moderate
Oct12Extreme
Nov13Extreme
Dec13Extreme

Air quality in Senador Guiomard 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 Senador Guiomard is worst in September — around 60 µg/m³ PM2.5 (unhealthy), about 7.8× the cleanest month (June, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorModerateGoodSep 1457 µg/m³Jun 98 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb13Moderate
Mar13Moderate
Apr10Good
May8Good
Jun8Good
Jul12Good
Aug37Poor
Sep60Unhealthy
Oct23Moderate
Nov13Moderate
Dec11Good
Location & terrain

Where is Senador Guiomard?

Senador Guiomard sits at 10.1°S, 67.7°W, 207 m above sea level, in Brazil. The nearest listed city is Rio Branco, 21 km away.

Topography around Senador Guiomard

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

Within 3 km, the terrain around Senador Guiomard has only modest variations in elevation — a maximum elevation change of 73 m around an average of 193 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 111 m; within 80 km, only modest variations in elevation — a maximum elevation change of 168 m.

The land around Senador Guiomard is covered by grassland (65%) and trees (27%) within 3 km, grassland (56%) and trees (42%) within 16 km, and trees (64%) and grassland (36%) within 80 km.

3 km
73 m
16 km
111 m
80 km
168 m
treesgrasslandartificial surfaceswater
May weather nearby: Rio Branco 21 km · Plácido de Castro 64 km · Porto Acre 66 km · Xapuri 101 km · Brasiléia 147 km · Epitaciolândia 147 km · Cobija 149 km · Sena Madureira 158 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 Senador Guiomard (-10.1497°, -67.7374°, elevation 207 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).