Climate and average weather in Isnos

In Isnos, the weather is mild, wet, and mostly cloudy and remarkably steady, with daytime highs holding near mild levels all year. The wettest stretch peaks around March.

Best: late August to early November

Over the course of the year, the temperature in Isnos typically varies from 9°C to 20°C, and is rarely below 8°C or above 22°C. November is the hottest month of the year, while July is the coldest.

Based on the travel score, the best times of year to visit Isnos for warm-weather activities are from early January to early March and late August to early November.

Hottest
Nov
20°
Coldest
Jul
10°
Wettest
Mar
208 mm
Driest
Sep
94 mm
Rain / yr
1956 mm
315 wet days
Daylight
11.9–12.1 h
shortest–longest
Elevation
1,806 m
1.9°N
Clearest
Jan
76% cloud
Founded
1663

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Isnos weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around late August to early November.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Isnos, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in Isnos stay fairly even through the year, without a distinct hot or cool season. The warmest month is November, with an average high of 20°C and low of 11°C; the coolest is July, with an average low of 10°C and high of 17°C.

Days typically run about 8°C warmer than nights year-round.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2011
Feb2011
Mar1911
Apr1911
May1811
Jun1710
Jul1710
Aug179
Sep1810
Oct1911
Nov2011
Dec2011

Average hourly temperature in Isnos

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on November afternoons, near 20°C, and coldest before dawn in July, near 10°C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Isnos weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 11°15222.111.94.3
Feb20° / 11°15422.711.94.0
Mar19° / 11°20828.5123.4
Apr19° / 11°19528.6123.2
May18° / 11°16328.812.13.2
Jun17° / 10°1712812.13.1
Jul17° / 10°18228.212.13.0
Aug17° / 12425.712.13.4
Sep18° / 10°9423.7123.9
Oct19° / 11°15225.9123.7
Nov20° / 11°19327.111.93.6
Dec20° / 11°16825.311.94.0

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Isnos gets about 1956 mm of precipitation a year. On a typical day the chance of rain is very wet, but that rises and falls sharply with the seasons.

The wetter season lasts 5.4 months, from around Feb 26 to Aug 7, peaking in April at about 96% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 3.

March is the wettest month by volume, with 208 mm over about 29 wet days; September is the driest, with 94 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetApr 15 · 96%Jan 3 · 71%
Rain on a day (%)Rain days
Jan7322
Feb8023
Mar9129
Apr9529
May9329
Jun9328
Jul9128
Aug8326
Sep7924
Oct8426
Nov9027
Dec8125

Monthly rainfall

Over a full year, Isnos collects about 1956 mm of rain across 315 wet days — roughly 163 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 208 mm, while September is the driest at just 94 mm. The three wettest months alone bring about 30% of the year’s total.

050100150200250JanFebMarAprMayJunJulAugSepOctNovDec15215420819516317118212494152193168
Rainfall (mm)Rain days
Jan15222
Feb15423
Mar20829
Apr19529
May16329
Jun17128
Jul18228
Aug12426
Sep9424
Oct15226
Nov19327
Dec16825

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Isnos, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.

The clearer part of the year begins around November 27 and lasts for 2.9 months, ending around February 22. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 16% of the time on average.

The cloudier part of the year begins around February 23 and lasts for 5.2 months, ending around July 31. The cloudiest month is May, when it is overcast or mostly cloudy 99% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecJan 2 · 20%May 8 · 0%partly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan1684
Feb1288
Mar595
Apr298
May199
Jun397
Jul793
Aug1090
Sep1189
Oct694
Nov595
Dec1486

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. Close to the equator, Isnos barely changes through the year: days stay near 12 h 06 min of light in every season.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan11.96:176:11
Feb11.96:216:18
Mar12.06:156:14
Apr12.06:046:06
May12.15:596:04
Jun12.16:026:09
Jul12.16:086:14
Aug12.16:076:11
Sep12.05:596:00
Oct12.05:515:49
Nov11.95:535:48
Dec11.96:045:58

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Isnos gets about 0 sunny days a month gloomy — and it barely shifts through the year, holding between 0 and 2 days every month. Clear skies here are a flat line, not a season.

05JanFebMarAprMayJunJulAugSepOctNovDecgloomyFeb 52 daysMay 80 days
Sunny daysSky
Jan1Gloomy
Feb1Gloomy
Mar0Gloomy
Apr0Gloomy
May0Gloomy
Jun0Gloomy
Jul0Gloomy
Aug0Gloomy
Sep1Gloomy
Oct0Gloomy
Nov0Gloomy
Dec0Gloomy

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

In Isnos, the air stays dry or comfortable essentially all year. Even in June, the muggiest month, it feels humid or worse only about 0% of the time — humidity is not something you need to plan around here.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDeccomfortabledry
Dry (%)Comfortable (%)
Jan7426
Feb6733
Mar6139
Apr6238
May7327
Jun937
Jul991
Aug991
Sep982
Oct8119
Nov5842
Dec6436

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Wind in Isnos is steady company: average speeds sit near 5 km/hcalm — in every month of the year, with no meaningful windy or calm season.

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmSep 8 · 5 km/hJun 2 · 5 km/h
Wind speed (km/h)Feels
Jan5calm
Feb5calm
Mar5calm
Apr5calm
May5calm
Jun5calm
Jul5calm
Aug5calm
Sep5calm
Oct5calm
Nov5calm
Dec5calm

Best time to visit Isnos

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Isnos throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around late October, Isnos is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Isnos for general outdoor tourist activities is from late August to early March, with a peak score in the first week of January.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationJan 3 · 4.4

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan4.3fair
Feb4.0fair
Mar3.4poor
Apr3.2poor
May3.2poor
Jun3.1poor
Jul3.0poor
Aug3.4poor
Sep3.9fair
Oct3.7fair
Nov3.6fair
Dec4.0fair

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Isnos for hot-weather activities is from mid October to late February, with a peak score in the first week of January.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationJan 5 · 2.1

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Isnos, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

Isnos packs about the same all year — highs hold near 20°C. Across the year the things worth having are rain gear, sun protection and a warm layer.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In November, Isnos sees daytime highs around 20°C and nights near 11°C. Pack rain gear. Worth having: sun protection. About 27 days see rain.

UV index (midday) in Isnos by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 19UV 17Aug 10UV 13
UV index (midday)Level
Jan16Extreme
Feb17Extreme
Mar17Extreme
Apr14Extreme
May15Extreme
Jun14Extreme
Jul13Extreme
Aug13Extreme
Sep15Extreme
Oct15Extreme
Nov13Extreme
Dec13Extreme

Average hourly UV index in Isnos

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in February the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan8.57
Feb8.57
Mar8.57
Apr86.5
May8.56.5
Jun86.5
Jul86
Aug86
Sep8.56.5
Oct86.5
Nov86
Dec86

Air quality in Isnos by month

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly 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).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 1419 µg/m³Jul 139 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar19Moderate
Apr16Moderate
May12Moderate
Jun10Good
Jul9Good
Aug12Good
Sep16Moderate
Oct13Moderate
Nov13Moderate
Dec14Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Isnos is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Isnos banks about 1,717 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around November.

05001,0001,5002,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan164
Feb150
Mar167
Apr157
May148
Jun115
Jul101
Aug102
Sep120
Oct154
Nov172
Dec170

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Isnos receives about 4.7 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 3.9 and 5.3 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

0123456JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightSep 205.3 kWhJun 243.9 kWh
Solar energy (kWh/m²)Level
Jan5.0Bright
Feb5.1Bright
Mar4.9Bright
Apr4.5Bright
May4.2Bright
Jun3.9Moderate
Jul4.0Moderate
Aug4.8Bright
Sep5.3Bright
Oct5.0Bright
Nov4.7Bright
Dec4.7Bright

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.

3 km
413 m
16 km
1,618 m
80 km
4,394 m
treesgrasslandartificial surfaces
Nearby: San Agustin 7.0 km · Pitalito 23 km · Tarqui 50 km · Guadalupe 55 km · La Plata 64 km · Popayán 70 km · Garzón 74 km · Florencia 79 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
Roman Catholic 64%Protestant 17%none 14%atheist 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 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. 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).