Climate and average weather in Tiom

In Tiom, 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: all year

Over the course of the year, the temperature in Tiom typically varies from 8°C to 18°C, and is rarely below 6°C or above 20°C. March is the hottest month of the year, while July is the coldest.

Based on the travel score, Tiom has no single best season — it scores well the whole year round, so any month is a good time to visit for warm-weather activities.

Hottest
Mar
18°
Coldest
Jul
Wettest
Mar
473 mm
Driest
Jul
220 mm
Rain / yr
4102 mm
327 wet days
Daylight
11.8–12.2 h
shortest–longest
Elevation
2,116 m
3.9°S
Clearest
Aug
84% cloud

Tiom 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 holds near its peak the whole year round.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Tiom stay fairly even through the year, without a distinct hot or cool season. The warmest month is March, with an average high of 18°C and low of 9°C; the coolest is July, with an average low of 8°C and high of 16°C.

Days typically run about 9°C warmer than nights year-round.

10°15°20°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan188
Feb188
Mar189
Apr189
May188
Jun178
Jul168
Aug178
Sep178
Oct188
Nov188
Dec189

Average hourly temperature in Tiom

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 March afternoons, near 18°C, and coldest before dawn in July, near C.

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

Tiom 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
Jan18° / 4222912.23.1
Feb18° / 45427.112.13.0
Mar18° / 47330.2123.0
Apr18° / 42428.711.93.0
May18° / 30326.911.83.3
Jun17° / 23123.311.83.5
Jul16° / 22024.111.83.3
Aug17° / 22925.211.93.3
Sep17° / 27626.5123.1
Oct18° / 31927.912.13.2
Nov18° / 3392812.23.1
Dec18° / 41329.712.23.0

Chance of rain

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

Tiom gets about 4102 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 7.3 months, from around Sep 27 to May 7, peaking in March at about 98% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 3.

March is the wettest month by volume, with 473 mm over about 30 wet days; July is the driest, with 220 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetMar 29 · 98%Jul 3 · 74%
Rain on a day (%)Rain days
Jan9429
Feb9727
Mar9730
Apr9629
May8627
Jun7723
Jul7924
Aug8225
Sep8827
Oct9028
Nov9328
Dec9630

Monthly rainfall

Over a full year, Tiom collects about 4102 mm of rain across 327 wet days — roughly 342 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 473 mm, while July is the driest at just 220 mm. The three wettest months alone bring about 33% of the year’s total.

050100150200250300350400450500550JanFebMarAprMayJunJulAugSepOctNovDec422454473424303231220229276319339413
Rainfall (mm)Rain days
Jan42229
Feb45427
Mar47330
Apr42429
May30327
Jun23123
Jul22024
Aug22925
Sep27627
Oct31928
Nov33928
Dec41330

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

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

The clearer part of the year begins around May 17 and lasts for 4.5 months, ending around September 30. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 9% of the time on average.

The cloudier part of the year begins around October 1 and lasts for 7.5 months, ending around May 16. The cloudiest month is February, when it is overcast or mostly cloudy 100% 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%JanFebMarAprMayJunJulAugSepOctNovDecAug 10 · 9%Jan 18 · 0%mostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan0100
Feb0100
Mar0100
Apr0100
May397
Jun694
Jul892
Aug991
Sep694
Oct199
Nov0100
Dec0100

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, Tiom barely changes through the year: days stay near 12 h 12 min of light in every season.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.25:496:02
Feb12.15:576:05
Mar12.05:555:57
Apr11.95:495:44
May11.85:485:37
Jun11.85:535:40
Jul11.85:585:46
Aug11.95:545:46
Sep12.05:415:40
Oct12.15:295:34
Nov12.25:265:37
Dec12.25:365:49

Sunny days

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

Tiom gets about 0 sunny days a month gloomy — and it barely shifts through the year, holding between 0 and 1 days every month. Clear skies here are a flat line, not a season.

05JanFebMarAprMayJunJulAugSepOctNovDecgloomyJul 111 daysJan 10 days
Sunny daysSky
Jan0Gloomy
Feb0Gloomy
Mar0Gloomy
Apr0Gloomy
May0Gloomy
Jun0Gloomy
Jul1Gloomy
Aug1Gloomy
Sep0Gloomy
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 Tiom, the air stays dry or comfortable essentially all year. Even in January, 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%JanFebMarAprMayJunJulAugSepOctNovDecdry
Dry (%)
Jan100
Feb100
Mar100
Apr100
May100
Jun100
Jul100
Aug100
Sep100
Oct100
Nov100
Dec100

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 Tiom is steady company: average speeds sit near 3 km/hcalm — in every month of the year, with no meaningful windy or calm season.

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmMar 5 · 3 km/hMay 24 · 3 km/h
Wind speed (km/h)Feels
Jan3calm
Feb3calm
Mar3calm
Apr3calm
May3calm
Jun3calm
Jul3calm
Aug3calm
Sep3calm
Oct3calm
Nov3calm
Dec3calm

Best time to visit Tiom

TravelBeach/poolTemperatureCloudsPrecipitation

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

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. In Tiom it holds close to 3.5 all year, so any month is about as good as another for general outdoor tourist activities.

0246810JanFebMarAprMayJunJulAugSepOctNovDectravel scoretemperaturecloudsprecipitation

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
Jan3.1poor
Feb3.0poor
Mar3.0poor
Apr3.0poor
May3.3poor
Jun3.5poor
Jul3.3poor
Aug3.3poor
Sep3.1poor
Oct3.2poor
Nov3.1poor
Dec3.0poor

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Tiom rarely gets warm enough to lift this score — no time of year really suits hot-weather activities here.

024681012JanFebMarAprMayJunJulAugSepOctNovDectemperaturecloudsprecipitation

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 Tiom, 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.

Tiom packs about the same all year — highs hold near 18°C. Across the year the things worth having are rain gear and a warm layer.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In March, Tiom sees daytime highs around 18°C and nights near 9°C. Pack rain gear. About 30 days see rain.

UV index (midday) in Tiom 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 Tiom peaks around March 11 at about 19 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 13 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 11UV 19Jun 21UV 13
UV index (midday)Level
Jan18Extreme
Feb19Extreme
Mar19Extreme
Apr17Extreme
May15Extreme
Jun13Extreme
Jul13Extreme
Aug15Extreme
Sep16Extreme
Oct16Extreme
Nov16Extreme
Dec16Extreme

Average hourly UV index in Tiom

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 March the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 7.5 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
Feb97.5
Mar8.57.5
Apr8.57
May86.5
Jun86
Jul86
Aug86.5
Sep8.57
Oct8.57
Nov8.57
Dec8.57
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Tiom 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. Tiom banks about 1,019 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around December.

02505007501,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan95
Feb87
Mar99
Apr95
May92
Jun71
Jul61
Aug64
Sep72
Oct86
Nov94
Dec102

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.

Tiom receives about 4.2 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 3.8 and 4.5 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

0123456JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightOct 104.5 kWhJun 203.8 kWh
Solar energy (kWh/m²)Level
Jan4.5Bright
Feb4.3Bright
Mar4.3Bright
Apr3.9Moderate
May4.0Moderate
Jun3.8Moderate
Jul3.8Moderate
Aug4.2Bright
Sep4.3Bright
Oct4.5Bright
Nov4.4Bright
Dec4.3Bright

Where is Tiom?

Tiom sits at 3.9°S, 138.5°E, 2,116 m above sea level, in Indonesia. The nearest listed city is Mulia, 57 km away.

JayapuraNabire

Topography around Tiom

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

Within 3 km, the terrain around Tiom has large variations in elevation — a maximum elevation change of 666 m around an average of 2,189 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,009 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,632 m.

The land around Tiom is covered by trees (59%) and grassland (39%) within 3 km, trees (86%) within 16 km, and trees (92%) within 80 km.

3 km
666 m
16 km
2,009 m
80 km
4,632 m
treesgrasslandartificial surfaceswetland
Nearby: Mulia 57 km · Wamena 58 km · Agats 184 km · Timika 212 km · Sentani 274 km · Abepura 283 km · Jayapura 295 km · Nabire 334 km

Indonesia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,060
2025
Happiness
5.6 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
0.3
per 100k, 2022
Road deaths
11.3
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 471
Religion
Muslim 87%Protestant 8%Roman Catholic 3%Hindu 2%

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 Tiom (-3.9236°, 138.4547°, elevation 2,116 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).