Yby Yaú in Spring
In spring (September, October and November), Yby Yaú sees average daytime highs around 30°C and overnight lows near 20°C, with 450 mm of rain over about 35 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 29°C in early September to 31°C by late November. The sky is clear or mostly clear about 41% of the time across spring, and the air most often feels muggy.
Spring is Yby Yaú's 3rd-best season to visit on our travel score. For the whole year in context, see Yby Yaú's year-round climate.
- Avg daytime high
- 30°C
- 2nd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 450 mm
- 35 wet days
- Avg wind
- 10 km/h
- Travel score
- 4.7
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Yby Yaú in Spring
Over the season highs climb from about 29°C in early September to 31°C by late November.
A typical spring day in Yby Yaú reaches about 30°C and drops to 20°C overnight. The warmest of the three months is November, the coolest September.
How spring really feels in Yby Yaú
Once humidity and wind are folded in, spring brings about 44 days that feel above 32°C and 0 that feel at or below 0°C.
The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Yby Yaú weather by month
How the three spring months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 32° / 23° | 161 | 17.1 | 13.3 | 3.3 |
| Feb | 32° / 22° | 148 | 15.3 | 12.8 | 3.5 |
| Mar | 31° / 22° | 119 | 12.8 | 12.2 | 4.2 |
| Apr | 29° / 20° | 105 | 9 | 11.5 | 5.5 |
| May | 26° / 17° | 136 | 9.1 | 10.9 | 7.0 |
| Jun | 25° / 16° | 103 | 8.4 | 10.6 | 7.3 |
| Jul | 25° / 15° | 79 | 6.8 | 10.7 | 7.6 |
| Aug | 28° / 16° | 80 | 6.2 | 11.2 | 7.1 |
| Sep | 29° / 18° | 111 | 8.9 | 11.9 | 5.6 |
| Oct | 31° / 20° | 172 | 12.8 | 12.5 | 4.4 |
| Nov | 31° / 21° | 167 | 13 | 13.1 | 4.1 |
| Dec | 32° / 22° | 180 | 16.4 | 13.4 | 3.5 |
Cloud cover in Spring
The sky is clear or mostly clear about 41% of the time across spring.
Chance of precipitation in Spring
Yby Yaú gets around 450 mm of rain over 35 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 10 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 30 min in early September to 13 h 18 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 5.6 kWh/m².
Is spring a good time to visit Yby Yaú?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Yby Yaú for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Yby Yaú in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Yby Yaú sees daytime highs around 30°C and nights near 20°C. Pack light clothes and sun protection. Worth having: rain gear. About 35 days see rain.
UV index in Yby Yaú in Spring
Clear-sky midday UV across spring averages 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 Yby Yaú peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (high).
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) | 16 | 15 | 13 | 10 | 7 | 6 | 6 | 7 | 6 | 10 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | High | Very high | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 16 | Extreme |
| Feb | 15 | Extreme |
| Mar | 13 | Extreme |
| Apr | 10 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 7 | Very high |
| Sep | 6 | High |
| Oct | 10 | Very high |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Air quality in Yby Yaú in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Yby Yaú is worst in September — around 39 µg/m³ PM2.5 (poor), about 6.3× the cleanest month (April, 6 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) | 9 | 9 | 7 | 6 | 7 | 9 | 10 | 39 | 39 | 21 | 13 | 9 |
| Level | Good | Good | Good | Good | Good | Good | Good | Poor | Poor | Moderate | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 9 | Good |
| Mar | 7 | Good |
| Apr | 6 | Good |
| May | 7 | Good |
| Jun | 9 | Good |
| Jul | 10 | Good |
| Aug | 39 | Poor |
| Sep | 39 | Poor |
| Oct | 21 | Moderate |
| Nov | 13 | Moderate |
| Dec | 9 | Good |
Where is Yby Yaú?
Yby Yaú sits at 23.0°S, 56.5°W, 184 m above sea level, in Paraguay. The nearest listed city is Pedro Juan Caballero, 94 km away.
Topography around Yby Yaú
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Yby Yaú.
Within 3 km, the terrain around Yby Yaú has only modest variations in elevation — a maximum elevation change of 101 m around an average of 197 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 264 m; within 80 km, large variations in elevation — a maximum elevation change of 667 m.
The land around Yby Yaú is covered by grassland (53%) and trees (41%) within 3 km, grassland (67%) and trees (30%) within 16 km, and grassland (56%) and trees (36%) within 80 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
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 Yby Yaú (-22.9661°, -56.5407°, elevation 184 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.