Isnos in Fall
In fall (September, October and November), Isnos sees average daytime highs around 19°C and overnight lows near 11°C, with 439 mm of rain over about 77 wet days across the season. It is the 2nd-warmest season and the driest season of the year.
Over the season highs climb from about 18°C in early September to 20°C by late November. The sky is clear or mostly clear about 1% of the time across fall, and the air most often feels dry.
Fall is Isnos's 2nd-best season to visit on our travel score. For the whole year in context, see Isnos's year-round climate.
- Avg daytime high
- 19°C
- 2nd-warmest season
- Avg overnight low
- 11°C
- Rainfall
- 439 mm
- 77 wet days
- Avg wind
- 5 km/h
- Travel score
- 3.7
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Isnos in Fall
Over the season highs climb from about 18°C in early September to 20°C by late November.
A typical fall day in Isnos reaches about 19°C and drops to 11°C overnight. The warmest of the three months is November, the coolest September.
Isnos weather by month
How the three fall 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 | 20° / 11° | 152 | 22.1 | 11.9 | 4.3 |
| Feb | 20° / 11° | 154 | 22.7 | 11.9 | 4.0 |
| Mar | 19° / 11° | 208 | 28.5 | 12 | 3.4 |
| Apr | 19° / 11° | 195 | 28.6 | 12 | 3.2 |
| May | 18° / 11° | 163 | 28.8 | 12.1 | 3.2 |
| Jun | 17° / 10° | 171 | 28 | 12.1 | 3.1 |
| Jul | 17° / 10° | 182 | 28.2 | 12.1 | 3.0 |
| Aug | 17° / 9° | 124 | 25.7 | 12.1 | 3.4 |
| Sep | 18° / 10° | 94 | 23.7 | 12 | 3.9 |
| Oct | 19° / 11° | 152 | 25.9 | 12 | 3.7 |
| Nov | 20° / 11° | 193 | 27.1 | 11.9 | 3.6 |
| Dec | 20° / 11° | 168 | 25.3 | 11.9 | 4.0 |
Cloud cover in Fall
The sky is clear or mostly clear about 1% of the time across fall.
Chance of precipitation in Fall
Isnos gets around 439 mm of rain over 77 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 5 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 hours in early September to 11 h 54 min by late November. 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 5.0 kWh/m².
Is fall a good time to visit Isnos?
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 weaker month for outdoor sightseeing in Isnos.
What to pack for Isnos in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Isnos sees daytime highs around 19°C and nights near 11°C. Pack rain gear. Worth having: sun protection. About 77 days see rain.
UV index in Isnos in Fall
Clear-sky midday UV across fall averages 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 Isnos peaks around February 19 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 10 at about 13 (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) | 16 | 17 | 17 | 14 | 15 | 14 | 13 | 13 | 15 | 15 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 16 | Extreme |
| Feb | 17 | Extreme |
| Mar | 17 | Extreme |
| Apr | 14 | Extreme |
| May | 15 | Extreme |
| Jun | 14 | Extreme |
| Jul | 13 | Extreme |
| Aug | 13 | Extreme |
| Sep | 15 | Extreme |
| Oct | 15 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Air quality in Isnos 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 Isnos is worst in March — around 19 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (July, 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) | 15 | 18 | 19 | 16 | 12 | 10 | 9 | 12 | 16 | 13 | 13 | 14 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 18 | Moderate |
| Mar | 19 | Moderate |
| Apr | 16 | Moderate |
| May | 12 | Moderate |
| Jun | 10 | Good |
| Jul | 9 | Good |
| Aug | 12 | Good |
| Sep | 16 | Moderate |
| Oct | 13 | Moderate |
| Nov | 13 | Moderate |
| Dec | 14 | Moderate |
Where is Isnos?
Isnos sits at 1.9°N, 76.2°W, 1,806 m above sea level, in Colombia. The nearest listed city is San Agustin, 7.0 km away.
Topography around Isnos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Isnos.
Within 3 km, the terrain around Isnos has significant variations in elevation — a maximum elevation change of 413 m around an average of 1,814 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,618 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,394 m.
The land around Isnos is covered by grassland (71%) and trees (26%) within 3 km, trees (67%) and grassland (32%) within 16 km, and trees (77%) and grassland (23%) within 80 km.
Colombia travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type A / B
- 120 / 240 V · 60 Hz
- Prices
- ≈ 38% of US
- price level, 2025
- GDP per capita
- $8,562
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 74%
- of population, 2024
- Homicide rate
- 24.9
- per 100k, 2023
- Road deaths
- 15.4
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 480
- 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 Isnos (1.9356°, -76.2406°, elevation 1,806 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.