Formosa in Fall
In fall (March, April and May), Formosa sees average daytime highs around 28°C and overnight lows near 19°C, with 257 mm of rain over about 31 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Across fall, daytime highs hold fairly steady around 28°C. The sky is clear or mostly clear about 34% of the time across fall, and the air most often feels muggy.
Fall is Formosa's 2nd-best season to visit on our travel score. For the whole year in context, see Formosa's year-round climate.
- Avg daytime high
- 28°C
- 3rd-warmest season
- Avg overnight low
- 19°C
- Rainfall
- 257 mm
- 31 wet days
- Avg wind
- 6 km/h
- Travel score
- 5.9
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in Formosa in Fall
Across fall, daytime highs hold fairly steady around 28°C.
A typical fall day in Formosa reaches about 28°C and drops to 19°C overnight. The warmest of the three months is April, the coolest May.
Formosa weather by month
How the three fall months (March, April and May) 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 | 28° / 20° | 202 | 18.6 | 12.8 | 4.5 |
| Feb | 29° / 20° | 159 | 16.5 | 12.5 | 4.5 |
| Mar | 29° / 20° | 174 | 18.3 | 12.1 | 4.6 |
| Apr | 29° / 19° | 69 | 10 | 11.7 | 5.7 |
| May | 28° / 17° | 15 | 3 | 11.3 | 7.3 |
| Jun | 27° / 16° | 4 | 0.6 | 11.1 | 8.3 |
| Jul | 28° / 15° | 0 | 0 | 11.2 | 8.5 |
| Aug | 29° / 17° | 4 | 1.1 | 11.5 | 7.1 |
| Sep | 31° / 19° | 23 | 3.8 | 11.9 | 5.3 |
| Oct | 31° / 20° | 103 | 11.6 | 12.4 | 4.4 |
| Nov | 29° / 20° | 218 | 20.8 | 12.7 | 4.1 |
| Dec | 28° / 20° | 244 | 20.6 | 12.9 | 4.3 |
Cloud cover in Fall
The sky is clear or mostly clear about 34% of the time across fall.
Chance of precipitation in Fall
Formosa gets around 257 mm of rain over 31 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 6 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 18 min in early March to 11 h 12 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 5.1 kWh/m².
Hazard calendar for Formosa
In fall, Formosa overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Formosa's monsoon runs November–March, when most of the year's rain falls.
Is fall a good time to visit Formosa?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Formosa for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Formosa in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Formosa sees daytime highs around 28°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 31 days see rain.
UV index in Formosa in Fall
Clear-sky midday UV across fall averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Formosa peaks around February 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 8 (very 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) | 15 | 16 | 15 | 12 | 10 | 8 | 8 | 10 | 12 | 13 | 14 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 16 | Extreme |
| Mar | 15 | Extreme |
| Apr | 12 | Extreme |
| May | 10 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 10 | Very high |
| Sep | 12 | Extreme |
| Oct | 13 | Extreme |
| Nov | 14 | Extreme |
| Dec | 13 | Extreme |
Air quality in Formosa in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Formosa is worst in September — around 24 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (July, 7 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) | 8 | 9 | 10 | 10 | 9 | 8 | 7 | 10 | 24 | 17 | 9 | 9 |
| Level | Good | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 9 | Good |
| Mar | 10 | Good |
| Apr | 10 | Good |
| May | 9 | Good |
| Jun | 8 | Good |
| Jul | 7 | Good |
| Aug | 10 | Good |
| Sep | 24 | Moderate |
| Oct | 17 | Moderate |
| Nov | 9 | Good |
| Dec | 9 | Good |
Where is Formosa?
Formosa sits at 15.5°S, 47.3°W, 915 m above sea level, in Brazil. The nearest listed city is Planaltina, 31 km away.
Topography around Formosa
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Formosa.
Within 3 km, the terrain around Formosa has only modest variations in elevation — a maximum elevation change of 176 m around an average of 917 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 610 m; within 80 km, large variations in elevation — a maximum elevation change of 848 m.
The land around Formosa is covered by artificial surfaces (47%) and grassland (25%) within 3 km, grassland (34%), trees (24%) and cropland (20%) within 16 km, and grassland (34%), trees (23%) and cropland (22%) within 80 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 Formosa (-15.5372°, -47.3344°, elevation 915 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.