Climate and average weather in Blora

In Blora, the weather is humid, sweltering, wet, and partly cloudy and remarkably steady, with daytime highs holding near sweltering levels all year. The wettest stretch peaks around January.

Best: mid May to late September

Over the course of the year, the temperature in Blora typically varies from 23°C to 33°C, and is rarely below 21°C or above 35°C. September is the hottest month of the year, while January is the coldest.

Based on the travel score, the best time of year to visit Blora for warm-weather activities is from mid May to late September.

Hottest
Sep
33°
Coldest
Jan
24°
Wettest
Jan
328 mm
Driest
Aug
14 mm
Rain / yr
2117 mm
218 wet days
Daylight
11.6–12.4 h
shortest–longest
Elevation
89 m
7.0°S
Clearest
Aug
51% cloud

Blora 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 mid May to late September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Blora stay fairly even through the year, without a distinct hot or cool season. The warmest month is September, with an average high of 33°C and low of 23°C; the coolest is January, with an average low of 24°C and high of 31°C.

Days typically run about 8°C warmer than nights, with the widest day–night swing (around 10°C) in September.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3124
Feb3124
Mar3124
Apr3224
May3224
Jun3224
Jul3223
Aug3323
Sep3323
Oct3324
Nov3324
Dec3224

How hot and cold Blora really feels

Feels-like highFeels-like lowactual air temp

The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.

On the hottest afternoons, once humidity is folded in, Blora feels like about 39°C (around November 12). Nearly every day a year carries some heat stress, peaking in November.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan36312424
Feb36312424
Mar38312424
Apr38322424
May38322424
Jun36322324
Jul35322323
Aug35332323
Sep36332323
Oct38332424
Nov38332424
Dec37322424

Average hourly temperature in Blora

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 September afternoons, near 33°C, and coldest before dawn in January, near 24°C.

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

Blora 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
Jan31° / 24°32829.312.42.4
Feb31° / 24°3162712.22.4
Mar31° / 24°30428.8122.4
Apr32° / 24°22725.311.92.6
May32° / 24°11117.111.73.5
Jun32° / 24°6210.311.64.0
Jul32° / 23°335.411.64.3
Aug33° / 23°143.411.84.2
Sep33° / 23°305.1123.6
Oct33° / 24°11413.812.22.9
Nov33° / 24°25123.712.32.4
Dec32° / 24°32728.312.42.3

Chance of rain

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

Blora gets about 2117 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 6.3 months, from around Oct 31 to May 10, peaking in January at about 97% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 5.

January is the wettest month by volume, with 328 mm over about 29 wet days; August is the driest, with 14 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetJan 29 · 97%Aug 5 · 10%
Rain on a day (%)Rain days
Jan9429
Feb9627
Mar9329
Apr8325
May5517
Jun3410
Jul175
Aug113
Sep185
Oct4514
Nov7824
Dec9128

Monthly rainfall

Over a full year, Blora collects about 2117 mm of rain across 218 wet days — roughly 176 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 328 mm, while August is the driest at just 14 mm. The three wettest months alone bring about 46% of the year’s total.

050100150200250300350400JanFebMarAprMayJunJulAugSepOctNovDec32831630422711162331430114251327
Rainfall (mm)Rain days
Jan32829
Feb31627
Mar30429
Apr22725
May11117
Jun6210
Jul335
Aug143
Sep305
Oct11414
Nov25124
Dec32728

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

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

The clearer part of the year begins around May 2 and lasts for 5.9 months, ending around October 29. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 63% of the time on average.

The cloudier part of the year begins around October 30 and lasts for 6.0 months, ending around May 1. The cloudiest month is February, when it is overcast or mostly cloudy 96% 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 13 · 63%Feb 21 · 4%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan793
Feb496
Mar1288
Apr2179
May4456
Jun5446
Jul5941
Aug6337
Sep5644
Oct4060
Nov2080
Dec595

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. The longest day, around January 1, brings about 12 h 24 min of light; the shortest, around May 25, only 11 h 36 min — a swing of roughly 0 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.45:335:55
Feb12.25:425:56
Mar12.05:435:45
Apr11.95:395:30
May11.75:405:21
Jun11.65:475:22
Jul11.65:515:29
Aug11.85:455:32
Sep12.05:305:28
Oct12.25:155:24
Nov12.35:105:29
Dec12.45:185:43

Sunny days

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

Blora averages about 5 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 12 days.

The sunnier stretch runs 5.7 months, from around May 8 to Oct 28. The sunniest month is September, with roughly 10 sunny days (mixed).

The greyest month is December, down near 0 sunny days — about 97% fewer than the September peak.

051015JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedSep 512 daysDec 220 days
Sunny daysSky
Jan0Gloomy
Feb0Gloomy
Mar1Gloomy
Apr2Gloomy
May7Gloomy
Jun9Mixed
Jul11Mixed
Aug11Mixed
Sep10Mixed
Oct7Gloomy
Nov2Gloomy
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.

Blora is humid all year round — on a typical day the air feels at least humid, and there is no real dry season to wait for.

The stickiest month is January, when it feels muggy, oppressive or miserable about 100% of the time. Even in January, the mildest month, the air is dry or comfortable only 0% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecmiserableoppressivemuggyhumid
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan006436
Feb005743
Mar004456
Apr003070
May034651
Jun2215522
Jul948376
Aug1359271
Sep758323
Oct1276012
Nov026335
Dec005545

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.

Across the year, average wind speed in Blora is typically calm, near 7 km/h, and varies little with the seasons.

The windier part of the year lasts 2.4 months, from around Dec 23 to Mar 6. The windiest month is February, averaging about 8 km/h (calm).

The calmer part of the year runs from around Mar 7 to Jun 16, with April the calmest month at about 5 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDecwindiercalmercalmlight breezeFeb 1 · 9 km/hApr 10 · 5 km/h
Wind speed (km/h)Feels
Jan8calm
Feb8calm
Mar6calm
Apr5calm
May6calm
Jun7calm
Jul7calm
Aug8calm
Sep7calm
Oct6calm
Nov5calm
Dec6calm

Hazard calendar for Blora

In seasonPeak

When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.

Blora sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Blora's monsoon runs November–April, when most of the year's rain falls.

Cyclone
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Best time to visit Blora

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around late May, Blora is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.

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 Blora for general outdoor tourist activities is from mid May to late September, with a peak score in the last week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 29 · 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
Jan2.4poor
Feb2.4poor
Mar2.4poor
Apr2.6poor
May3.5poor
Jun4.0fair
Jul4.3fair
Aug4.2fair
Sep3.6fair
Oct2.9poor
Nov2.4poor
Dec2.3poor

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 Blora for hot-weather activities is from early June to early October, with a peak score in the first week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 5 · 7.4

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 Blora, 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.

Blora packs about the same all year — highs hold near 33°C. Across the year the things worth having are light clothes, sun protection and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In September, Blora sees daytime highs around 33°C and nights near 23°C. Pack light clothes and sun protection. About 5 days see rain.

Sea temperature near Blora

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

The sea at the nearest coast (about 39 km away) is warmest in November at about 30°C and coldest in August near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul29Tropical
Aug28Tropical
Sep29Tropical
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index (midday) in Blora 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 Blora peaks around March 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highMar 17UV 14Jun 16UV 8
UV index (midday)Level
Jan10Extreme
Feb10Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun8Very high
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov7Very high
Dec11Extreme

Average hourly UV index in Blora

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 hours a day reach index 3 (protection recommended), and 6.5 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)
Jan85.5
Feb7.55.5
Mar86.5
Apr7.55.5
May74.5
Jun6.53.5
Jul74.5
Aug7.55.5
Sep86
Oct85.5
Nov74
Dec85.5

Air quality in Blora 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 Blora is worst in May — around 40 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModeratePoorModerateMay 1839 µg/m³Feb 1126 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb25Moderate
Mar32Moderate
Apr35Poor
May40Poor
Jun37Poor
Jul34Moderate
Aug33Moderate
Sep35Poor
Oct39Poor
Nov34Moderate
Dec30Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Blora 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. Blora banks about 6,514 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around October.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan538
Feb486
Mar546
Apr535
May553
Jun530
Jul545
Aug550
Sep551
Oct579
Nov552
Dec549

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.

Blora receives about 5.6 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.9 and 6.7 kWh/m².

The brighter stretch of the year lasts 4.1 months, from around Jul 23 to Nov 24. The brightest month is September, averaging about 6.7 kWh/m² (intense).

The dimmest month is January, down near 5.0 kWh/m² — roughly 25% less than the September peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseSep 266.7 kWhJan 284.9 kWh
Solar energy (kWh/m²)Level
Jan5.0Bright
Feb5.1Bright
Mar5.4Bright
Apr5.3Bright
May5.3Bright
Jun5.1Bright
Jul5.5Bright
Aug6.1Intense
Sep6.7Intense
Oct6.6Intense
Nov5.9Bright
Dec5.1Bright

Where is Blora?

Blora sits at 7.0°S, 111.4°E, 89 m above sea level, in Indonesia. The nearest listed city is Cepu, 27 km away.

Topography around Blora

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

Within 3 km, the terrain around Blora has only modest variations in elevation — a maximum elevation change of 35 m around an average of 88 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 396 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,224 m.

The land around Blora is covered by cropland (47%), artificial surfaces (27%) and trees (24%) within 3 km, trees (56%) and cropland (31%) within 16 km, and trees (40%), cropland (30%) and water (23%) within 80 km.

3 km
35 m
16 km
396 m
80 km
3,224 m
treesgrasslandcroplandartificial surfaceswater
Nearby: Cepu 27 km · Rembangan 31 km · Lasem 31 km · Juwana 41 km · Pati 48 km · Ngawi 48 km · Bojonegoro 55 km · Purwodadi 57 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 Blora (-6.9698°, 111.4186°, elevation 89 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).