San Juan Bautista weather in September

In September, San Juan Bautista sees average daytime highs of 26°C and overnight lows near 15°C, with 133 mm of rain across 9.2 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 49% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 24 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is San Juan Bautista's 2nd-clearest and 2nd-windiest month. For the whole year in context, see San Juan Bautista's year-round climate.

Daytime high
26°
8th warmest
Overnight low
15°
5th coldest
Rainfall
133 mm
9.2 wet days
Daylight
11 h 48 min
6:48 AM – 6:38 PM
Cloud cover
46%
2nd clearest
Wind
14 km/h
2nd windiest
Solar energy
4.73 kWh/m²
Travel score
7.0
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical September day in San Juan Bautista reaches about 26°C in the afternoon and slips back to 15°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 33°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12514
22514
32515
42515
52515
62615
72615
82615
92615
102615
112615
122615
132615
142615
152615
162615
172615
182615
192615
202615
212615
222615
232616
242616
252616
262616
272616
282616
292716
302716

How September really feels in San Juan Bautista

Once humidity and wind are folded in, September 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

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

San Juan Bautista weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 22°12512.213.53.5
Feb32° / 22°1361212.93.8
Mar31° / 21°1251112.24.7
Apr28° / 18°1559.611.46.4
May24° / 15°1348.710.77.1
Jun22° / 13°1148.410.46.9
Jul22° / 12°948.210.57.1
Aug24° / 13°767.211.17.7
Sep26° / 15°1339.211.87.0
Oct28° / 18°18811.912.65.9
Nov30° / 19°16710.613.35.2
Dec32° / 21°1701213.64.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 40%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16535
26535
36436
46436
56337
66337
76238
86238
96139
106139
116139
126139
136040
146040
156040
165941
175941
185941
195941
205941
215842
225941
235842
245842
255743
265743
275545
285545
295545
305347

Chance of precipitation in September

Any precipitation

San Juan Bautista gets around 133 mm of rain over 9.2 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 31% and peaks near 35% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
125
225
326
426
526
627
727
828
928
1028
1129
1229
1330
1430
1531
1631
1732
1832
1932
2033
2133
2233
2334
2434
2534
2634
2735
2835
2935
3035

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 14% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
141252680
241252680
341252590
440252590
540252590
6402525100
7402624100
8402624100
9402624100
10392623111
11392623111
12392623111
13382623121
14382523121
15382523121
16382523131
17382523131
18382423131
19372424141
20372424141
21362324152
22362324152
23352325162
24342225172
25332226182
26322226182
27312226192
28302226202
29292126213
30282126223

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 24 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over September. Sunrise moves from 7:05 AM to 6:31 AM, and sunset from 6:32 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:056:32
211.57:046:32
311.57:036:33
411.57:026:33
511.67:006:33
611.66:596:34
711.66:586:34
811.66:576:35
911.76:566:35
1011.76:556:36
1111.76:536:36
1211.76:526:36
1311.86:516:37
1411.86:506:37
1511.86:496:38
1611.86:486:38
1711.96:466:39
1811.96:456:39
1911.96:446:40
2012.06:436:40
2112.06:426:40
2212.06:406:41
2312.06:396:41
2412.16:386:42
2512.16:376:42
2612.16:366:43
2712.16:356:43
2812.26:336:44
2912.26:326:44
3012.26:316:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.73 kWh/m².

For context, solar energy here swings from a low near 2.66 kWh/m² to a high of 6.75 kWh/m² in December across the year — September's 4.73 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.1Bright
Planning a trip in September

Is September a good time to visit San Juan Bautista?

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

7.0
Sightseeing
4th-best month of the year
6.6
Beach & pool
4th-best month of the year

September is one of the better times to visit San Juan Bautista for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for San Juan Bautista in September

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

In September, San Juan Bautista sees daytime highs around 26°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in San Juan Bautista in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Juan Bautista peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateVery highExtremeJan 18UV 14Jun 20UV 4
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar11Extreme
Apr8Very high
May6High
Jun4Moderate
Jul4Moderate
Aug5Moderate
Sep8Very high
Oct7Very high
Nov12Extreme
Dec13Extreme

Air quality in San Juan Bautista in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in San Juan Bautista is worst in September — around 19 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (May, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodSep 1119 µg/m³May 157 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar9Good
Apr8Good
May7Good
Jun8Good
Jul11Good
Aug17Moderate
Sep19Moderate
Oct12Good
Nov9Good
Dec7Good
Location & terrain

Where is San Juan Bautista?

San Juan Bautista sits at 26.7°S, 57.1°W, 103 m above sea level, in Paraguay. The nearest listed city is Caazapá, 93 km away.

CaazapáItuzaingóFormosaPilarVillarricaItáCaacupéItauguá

Topography around San Juan Bautista

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

Within 3 km, the terrain around San Juan Bautista has only modest variations in elevation — a maximum elevation change of 62 m around an average of 108 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 119 m; within 80 km, significant variations in elevation — a maximum elevation change of 491 m.

The land around San Juan Bautista is covered by grassland (55%) and trees (39%) within 3 km, grassland (71%) within 16 km, and grassland (58%) within 80 km.

3 km
62 m
16 km
119 m
80 km
491 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Caazapá 93 km · Ituzaingó 111 km · Formosa 116 km · Pilar 118 km · Villarrica 124 km · Itá 132 km · Caacupé 143 km · Itauguá 144 km

Paraguay travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C / N
220 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$7,027
2025
Happiness
6.2 / 10
World Happiness, 2025
Safe drinking water
64%
of population, 2024
Homicide rate
6.8
per 100k, 2023
Road deaths
22
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 531
Religion
Roman Catholic 80%Protestant 7%Believer 6%other 1%

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 San Juan Bautista (-26.6703°, -57.1407°, elevation 103 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).