Ulianópolis weather in April

In April, Ulianópolis sees average daytime highs of 30°C and overnight lows near 23°C, with 247 mm of rain across 27 wet days and about 11.9 hours of daylight. It is the 10th-warmest and 3rd-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 2% of the time in April, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of April to 11 h 54 min by month's end. Set against the rest of the year, April is Ulianópolis's 10th-clearest and 12th-windiest month. For the whole year in context, see Ulianópolis's year-round climate.

Daytime high: 30°; 10th warmest
Overnight low: 23°; 8th coldest
Rainfall: 247 mm; 27 wet days
Daylight: 11 h 54 min; 6:13 AM – 6:08 PM
Cloud cover: 84%; 10th clearest
Wind: 5 km/h; 12th windiest
Solar energy: 4.18 kWh/m²
Travel score: 2.7; out of 10

← March Ulianópolis year-round climate May →Best places to visit in April

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

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

A typical April day in Ulianópolis reaches about 30°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, April runs on par with March and on par with May.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	31	31	31	31	31	31	31
Avg low (°C)	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	30	23
13	30	23
14	30	23
15	30	23
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	30	23
23	30	23
24	31	23
25	31	23
26	31	23
27	31	23
28	31	23
29	31	23
30	31	23

How April really feels in Ulianópolis

Once humidity and wind are folded in, April averages 30 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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in April is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Ulianópolis weather by month

How April compares with the rest of the year at a glance. April is the 10th-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	31° / 23°	239	25.8	12.2	2.7
Feb	30° / 23°	273	25.7	12.1	2.7
Mar	30° / 23°	348	29.2	12	2.6
Apr	30° / 23°	247	27	11.9	2.7
May	31° / 23°	131	19.6	11.8	3.4
Jun	32° / 22°	32	7.4	11.8	4.3
Jul	33° / 22°	16	3.6	11.8	3.9
Aug	35° / 22°	6	1.1	11.9	3.4
Sep	35° / 23°	11	2	12	3.2
Oct	35° / 24°	25	5.6	12.1	3.0
Nov	34° / 24°	67	10.2	12.2	3.0
Dec	33° / 23°	129	16.8	12.2	3.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 9% of April, with mostly cloudy or overcast conditions the remaining 89%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	6	6	6	7	7	8	9	9	10	10	10	11	12	12	13	13	13	13	14	14	14	14	14	13	13	13	13	14	14	14
Cloudier (%)	94	94	94	93	93	92	91	91	90	90	90	89	88	88	87	87	87	87	86	86	86	86	86	87	87	87	87	86	86	86

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	6	94
4	7	93
5	7	93
6	8	92
7	9	91
8	9	91
9	10	90
10	10	90
11	10	90
12	11	89
13	12	88
14	12	88
15	13	87
16	13	87
17	13	87
18	13	87
19	14	86
20	14	86
21	14	86
22	14	86
23	14	86
24	13	87
25	13	87
26	13	87
27	13	87
28	14	86
29	14	86
30	14	86

Chance of precipitation in April

Any precipitation

Ulianópolis gets around 247 mm of rain over 27 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 90% and peaks near 95% on the wettest days. The odds ease toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	95	94	94	94	94	94	93	93	92	92	92	91	91	90	90	89	89	88	88	88	87	87	87	86	86	86	85	84	83	83

	Rain chance (%)
1	95
2	94
3	94
4	94
5	94
6	94
7	93
8	93
9	92
10	92
11	92
12	91
13	91
14	90
15	90
16	89
17	89
18	88
19	88
20	88
21	87
22	87
23	87
24	86
25	86
26	86
27	85
28	84
29	83
30	83

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the oppressive band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Oppressive (%)	78	77	76	76	76	76	76	76	76	76	76	75	75	75	75	74	74	74	74	73	73	73	72	72	72	72	73	73	73	74
Miserable (%)	22	23	24	24	24	24	24	24	24	24	24	25	25	25	25	26	26	26	26	27	27	27	28	28	28	28	27	27	27	26

	Oppressive (%)	Miserable (%)
1	78	22
2	77	23
3	76	24
4	76	24
5	76	24
6	76	24
7	76	24
8	76	24
9	76	24
10	76	24
11	76	24
12	75	25
13	75	25
14	75	25
15	75	25
16	74	26
17	74	26
18	74	26
19	74	26
20	73	27
21	73	27
22	73	27
23	72	28
24	72	28
25	72	28
26	72	28
27	73	27
28	73	27
29	73	27
30	74	26

Wind in April

Winds average 5 km/h in April, the calmest month.

Across April, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	6	6	6	6	6	6	6	6	6	6
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	5	calm
2	5	calm
3	5	calm
4	5	calm
5	5	calm
6	5	calm
7	5	calm
8	5	calm
9	5	calm
10	5	calm
11	5	calm
12	5	calm
13	5	calm
14	5	calm
15	5	calm
16	5	calm
17	5	calm
18	5	calm
19	5	calm
20	5	calm
21	6	calm
22	6	calm
23	6	calm
24	6	calm
25	6	calm
26	6	calm
27	6	calm
28	6	calm
29	6	calm
30	6	calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 hours at the start of April to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over April. Sunrise moves from 6:16 AM to 6:11 AM, and sunset from 6:14 PM to 6:04 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	12.0	12.0	12.0	12.0	12.0	12.0	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9
Sunrise (AM)	6:16	6:15	6:15	6:15	6:15	6:15	6:14	6:14	6:14	6:14	6:14	6:13	6:13	6:13	6:13	6:13	6:13	6:12	6:12	6:12	6:12	6:12	6:12	6:12	6:11	6:11	6:11	6:11	6:11	6:11
Sunset (PM)	6:14	6:13	6:13	6:12	6:12	6:12	6:11	6:11	6:10	6:10	6:10	6:09	6:09	6:08	6:08	6:08	6:07	6:07	6:07	6:06	6:06	6:06	6:05	6:05	6:05	6:05	6:04	6:04	6:04	6:04

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.0	6:16	6:14
2	12.0	6:15	6:13
3	12.0	6:15	6:13
4	12.0	6:15	6:12
5	12.0	6:15	6:12
6	12.0	6:15	6:12
7	11.9	6:14	6:11
8	11.9	6:14	6:11
9	11.9	6:14	6:10
10	11.9	6:14	6:10
11	11.9	6:14	6:10
12	11.9	6:13	6:09
13	11.9	6:13	6:09
14	11.9	6:13	6:08
15	11.9	6:13	6:08
16	11.9	6:13	6:08
17	11.9	6:13	6:07
18	11.9	6:12	6:07
19	11.9	6:12	6:07
20	11.9	6:12	6:06
21	11.9	6:12	6:06
22	11.9	6:12	6:06
23	11.9	6:12	6:05
24	11.9	6:12	6:05
25	11.9	6:11	6:05
26	11.9	6:11	6:05
27	11.9	6:11	6:04
28	11.9	6:11	6:04
29	11.9	6:11	6:04
30	11.9	6:11	6:04

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.18 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.18 kWh/m² to a high of 6.15 kWh/m² in October across the year — April's 4.18 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2	4.2
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.2	Bright
2	4.2	Bright
3	4.2	Bright
4	4.2	Bright
5	4.2	Bright
6	4.2	Bright
7	4.2	Bright
8	4.2	Bright
9	4.2	Bright
10	4.2	Bright
11	4.2	Bright
12	4.2	Bright
13	4.2	Bright
14	4.2	Bright
15	4.2	Bright
16	4.2	Bright
17	4.2	Bright
18	4.2	Bright
19	4.2	Bright
20	4.2	Bright
21	4.2	Bright
22	4.2	Bright
23	4.2	Bright
24	4.2	Bright
25	4.2	Bright
26	4.2	Bright
27	4.2	Bright
28	4.2	Bright
29	4.2	Bright
30	4.2	Bright

Planning a trip in April

Hazard calendar for Ulianópolis

In seasonPeak

In April, Ulianópolis sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Ulianópolis's monsoon runs January–April, when most of the year's rain falls.

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is April a good time to visit Ulianópolis?

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

2.7

Sightseeing

9th-best month of the year

3.9

Beach & pool

10th-best month of the year

April is a weaker month for outdoor sightseeing in Ulianópolis.

What to pack for Ulianópolis in April

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

In April, Ulianópolis sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

UV index in Ulianópolis in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ulianópolis peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 17 at about 10 (extreme).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	13	14	15	14	11	10	10	10	12	12	11	10
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	14	Extreme
Mar	15	Extreme
Apr	14	Extreme
May	11	Extreme
Jun	10	Extreme
Jul	10	Extreme
Aug	10	Extreme
Sep	12	Extreme
Oct	12	Extreme
Nov	11	Extreme
Dec	10	Extreme

Air quality in Ulianópolis in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Ulianópolis is worst in November — around 33 µg/m³ PM2.5 (moderate), about 3.7× the cleanest month (June, 9 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	16	16	15	12	10	9	11	13	16	21	33	30
Level	Moderate	Moderate	Moderate	Moderate	Good	Good	Good	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	16	Moderate
Feb	16	Moderate
Mar	15	Moderate
Apr	12	Moderate
May	10	Good
Jun	9	Good
Jul	11	Good
Aug	13	Moderate
Sep	16	Moderate
Oct	21	Moderate
Nov	33	Moderate
Dec	30	Moderate

Location & terrain

Where is Ulianópolis?

Ulianópolis sits at 3.7°S, 47.5°W, 119 m above sea level, in Brazil. The nearest listed city is Dom Eliseu, 60 km away.

Topography around Ulianópolis

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

Within 3 km, the terrain around Ulianópolis has only modest variations in elevation — a maximum elevation change of 47 m around an average of 113 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 152 m; within 80 km, significant variations in elevation — a maximum elevation change of 304 m.

The land around Ulianópolis is covered by grassland (62%) and trees (26%) within 3 km, grassland (51%) and trees (48%) within 16 km, and trees (65%) and grassland (33%) within 80 km.

3 km

47 m

grassland 62%

16 km

152 m

grassland 51%

80 km

304 m

trees 65%

treesgrasslandcroplandartificial surfacesbare terrain

← March Ulianópolis year-round climate May →Best places to visit in April

April weather nearby: Dom Eliseu 60 km · Itinga do Maranhão 79 km · Paragominas 84 km · Bom Jesus das Selvas 109 km · Rondon do Pará 131 km · Ipixuna do Pará 132 km · Buriticupu 132 km · Açailândia 134 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

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 Ulianópolis (-3.7419°, -47.4947°, elevation 119 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).

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	30	23
13	30	23
14	30	23
15	30	23
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	30	23
23	30	23
24	31	23
25	31	23
26	31	23
27	31	23
28	31	23
29	31	23
30	31	23

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	6	94
4	7	93
5	7	93
6	8	92
7	9	91
8	9	91
9	10	90
10	10	90
11	10	90
12	11	89
13	12	88
14	12	88
15	13	87
16	13	87
17	13	87
18	13	87
19	14	86
20	14	86
21	14	86
22	14	86
23	14	86
24	13	87
25	13	87
26	13	87
27	13	87
28	14	86
29	14	86
30	14	86

	Rain chance (%)
1	95
2	94
3	94
4	94
5	94
6	94
7	93
8	93
9	92
10	92
11	92
12	91
13	91
14	90
15	90
16	89
17	89
18	88
19	88
20	88
21	87
22	87
23	87
24	86
25	86
26	86
27	85
28	84
29	83
30	83

	Oppressive (%)	Miserable (%)
1	78	22
2	77	23
3	76	24
4	76	24
5	76	24
6	76	24
7	76	24
8	76	24
9	76	24
10	76	24
11	76	24
12	75	25
13	75	25
14	75	25
15	75	25
16	74	26
17	74	26
18	74	26
19	74	26
20	73	27
21	73	27
22	73	27
23	72	28
24	72	28
25	72	28
26	72	28
27	73	27
28	73	27
29	73	27
30	74	26

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	30	23
13	30	23
14	30	23
15	30	23
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	30	23
23	30	23
24	31	23
25	31	23
26	31	23
27	31	23
28	31	23
29	31	23
30	31	23

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	6	94
4	7	93
5	7	93
6	8	92
7	9	91
8	9	91
9	10	90
10	10	90
11	10	90
12	11	89
13	12	88
14	12	88
15	13	87
16	13	87
17	13	87
18	13	87
19	14	86
20	14	86
21	14	86
22	14	86
23	14	86
24	13	87
25	13	87
26	13	87
27	13	87
28	14	86
29	14	86
30	14	86

	Rain chance (%)
1	95
2	94
3	94
4	94
5	94
6	94
7	93
8	93
9	92
10	92
11	92
12	91
13	91
14	90
15	90
16	89
17	89
18	88
19	88
20	88
21	87
22	87
23	87
24	86
25	86
26	86
27	85
28	84
29	83
30	83

	Oppressive (%)	Miserable (%)
1	78	22
2	77	23
3	76	24
4	76	24
5	76	24
6	76	24
7	76	24
8	76	24
9	76	24
10	76	24
11	76	24
12	75	25
13	75	25
14	75	25
15	75	25
16	74	26
17	74	26
18	74	26
19	74	26
20	73	27
21	73	27
22	73	27
23	72	28
24	72	28
25	72	28
26	72	28
27	73	27
28	73	27
29	73	27
30	74	26

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	30	23
13	30	23
14	30	23
15	30	23
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	30	23
23	30	23
24	31	23
25	31	23
26	31	23
27	31	23
28	31	23
29	31	23
30	31	23

	Clearer (%)	Cloudier (%)
1	6	94
2	6	94
3	6	94
4	7	93
5	7	93
6	8	92
7	9	91
8	9	91
9	10	90
10	10	90
11	10	90
12	11	89
13	12	88
14	12	88
15	13	87
16	13	87
17	13	87
18	13	87
19	14	86
20	14	86
21	14	86
22	14	86
23	14	86
24	13	87
25	13	87
26	13	87
27	13	87
28	14	86
29	14	86
30	14	86

	Rain chance (%)
1	95
2	94
3	94
4	94
5	94
6	94
7	93
8	93
9	92
10	92
11	92
12	91
13	91
14	90
15	90
16	89
17	89
18	88
19	88
20	88
21	87
22	87
23	87
24	86
25	86
26	86
27	85
28	84
29	83
30	83

	Oppressive (%)	Miserable (%)
1	78	22
2	77	23
3	76	24
4	76	24
5	76	24
6	76	24
7	76	24
8	76	24
9	76	24
10	76	24
11	76	24
12	75	25
13	75	25
14	75	25
15	75	25
16	74	26
17	74	26
18	74	26
19	74	26
20	73	27
21	73	27
22	73	27
23	72	28
24	72	28
25	72	28
26	72	28
27	73	27
28	73	27
29	73	27
30	74	26