Mafra weather in May

In May, Mafra sees average daytime highs of 21°C and overnight lows near 12°C, with 94 mm of rain across 8 wet days and about 10.7 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 27% of the time in May, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of May to 10 h 30 min by month's end. Set against the rest of the year, May is Mafra's 4th-clearest and 9th-windiest month. For the whole year in context, see Mafra's year-round climate.

Daytime high
21°
10th warmest
Overnight low
12°
4th coldest
Rainfall
94 mm
8 wet days
Daylight
10 h 42 min
7:54 AM – 6:37 PM
Cloud cover
65%
4th clearest
Wind
9 km/h
9th windiest
Solar energy
3.07 kWh/m²
Travel score
6.6
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 19°C by the end.

A typical May day in Mafra reaches about 21°C in the afternoon and slips back to 12°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 25°C. Set against its neighbours, May runs about 3°C cooler than April and about 1°C warmer than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12213
22213
32213
42213
52213
62213
72213
82112
92112
102112
112112
122112
132112
142112
152112
162112
172012
182012
192012
202012
212011
222011
232011
242011
252011
262011
272011
282011
291911
301911
311911

Mafra 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
Jan27° / 18°18319.913.54.9
Feb27° / 18°15717.812.95.0
Mar26° / 17°10614.212.25.9
Apr24° / 15°718.811.46.9
May21° / 12°94810.76.6
Jun19° / 10°1069.210.46.3
Jul19° / 86810.56.5
Aug21° / 10°847.811.17.0
Sep22° / 12°14510.811.86.4
Oct23° / 14°14414.212.66.0
Nov25° / 15°12313.913.36.0
Dec26° / 17°1491713.65.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 11% of May, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
34159
44159
53961
64060
74060
83862
93862
103862
113862
123862
133763
143763
153862
163763
173763
183763
193763
203862
213763
223862
233862
243961
253862
263961
273862
283961
293961
304159
314159

Chance of precipitation in May

Any precipitation

Mafra gets around 94 mm of rain over 8 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 26% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
125
224
324
424
524
624
724
824
924
1024
1124
1224
1324
1425
1525
1625
1726
1826
1926
2026
2127
2227
2327
2428
2528
2629
2729
2830
2930
3030
3130

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13441231
23542221
33742201
43842191
54042181
64142171
74242151
84342141
94442131
104542121
114642111
124742110
134841100
144941100
15504190
16514090
17514090
18523990
19533890
20543790
21553690
22553690
23563590
24573490
25583390
26593290
27613180
28623080
29623080
30632980
31632980

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 hours at the start of May to 10 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over May. Sunrise moves from 7:46 AM to 8:02 AM, and sunset from 6:47 PM to 6:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.07:466:47
211.07:466:46
311.07:476:46
411.07:476:45
510.97:486:44
610.97:486:43
710.97:496:43
810.97:496:42
910.97:506:41
1010.87:506:41
1110.87:516:40
1210.87:526:39
1310.87:526:39
1410.87:536:38
1510.77:536:38
1610.77:546:37
1710.77:546:37
1810.77:556:36
1910.77:556:36
2010.77:566:35
2110.67:566:35
2210.67:576:34
2310.67:586:34
2410.67:586:34
2510.67:596:33
2610.67:596:33
2710.68:006:33
2810.58:006:32
2910.58:016:32
3010.58:016:32
3110.58:026:32

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.07 kWh/m².

For context, solar energy here swings from a low near 2.77 kWh/m² to a high of 5.66 kWh/m² in December across the year — May's 3.07 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.5Moderate
43.4Moderate
53.4Moderate
63.4Moderate
73.3Moderate
83.3Moderate
93.3Moderate
103.2Moderate
113.2Moderate
123.2Moderate
133.1Moderate
143.1Moderate
153.1Moderate
163.0Moderate
173.0Moderate
183.0Moderate
193.0Moderate
202.9Moderate
212.9Moderate
222.9Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in May

Is May a good time to visit Mafra?

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

6.6
Sightseeing
3rd-best month of the year
3.8
Beach & pool
10th-best month of the year

May is a reasonable time to visit Mafra for sightseeing.

What to pack for Mafra in May

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

In May, Mafra sees daytime highs around 21°C and nights near 12°C. Worth packing: rain gear. About 8 days see rain.

rain gear

UV index in Mafra in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mafra peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 19UV 15Jul 13UV 5
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May6High
Jun6High
Jul5High
Aug6High
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Mafra 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 Mafra is worst in September — around 16 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (February, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1115 µg/m³Feb 139 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar9Good
Apr11Good
May12Moderate
Jun12Good
Jul14Moderate
Aug15Moderate
Sep16Moderate
Oct11Good
Nov10Good
Dec9Good
Location & terrain

Where is Mafra?

Mafra sits at 26.1°S, 49.8°W, 806 m above sea level, in Brazil. The nearest listed city is Rio Negro, 1.0 km away.

Topography around Mafra

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

Within 3 km, the terrain around Mafra has only modest variations in elevation — a maximum elevation change of 97 m around an average of 804 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 196 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,264 m.

The land around Mafra is covered by trees (42%) and artificial surfaces (38%) within 3 km, trees (57%) and cropland (31%) within 16 km, and trees (68%) and cropland (23%) within 80 km.

3 km
97 m
16 km
196 m
80 km
1,264 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Rio Negro 1.0 km · Itaiópolis 27 km · Rio Negrinho 33 km · Lapa 39 km · Quitandinha 41 km · Papanduva 44 km · São Bento do Sul 45 km · Três Barras 52 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 Mafra (-26.1114°, -49.8053°, elevation 806 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).