Blue Mountains weather
Temperature, rain and wind in Blue Mountains (New South Wales, Australia), a city of about 78,121 people: how it is right now, hour by hour into tomorrow, the next 7 days and what each month of the year is like.
Right now
Friday 16 October, 12:00 (Australia/Sydney)
12 °C
Rain showers
Feels like
12 °C
Humidity
72%
Wind
14 km/h
E · Beaufort 3
Dew point
7 °C
Cloud cover
26%
Pressure
1,031 hPa
Hour by hour
Next 24 hours, in the city’s local time.
| Time | Conditions | Temperature | Rain | Wind |
|---|---|---|---|---|
| 12:00 | Rain showers | 12 °C | 0.3 mm | 14 km/h |
| 13:00 | Rain showers | 13 °C | 0.4 mm | 15 km/h |
| 14:00 | Rain | 12 °C | 0.5 mm | 16 km/h |
| 15:00 | Rain | 12 °C | 0.5 mm | 15 km/h |
| 16:00 | Cloudy | 12 °C | 0.0 mm | 17 km/h |
| 17:00 | Cloudy | 12 °C | 0.0 mm | 16 km/h |
| 18:00 | Cloudy | 11 °C | 0.0 mm | 16 km/h |
| 19:00 | Cloudy | 9 °C | 0.0 mm | 15 km/h |
| 20:00 | Cloudy | 9 °C | 0.0 mm | 12 km/h |
| 21:00 | Fair | 9 °C | 0.0 mm | 13 km/h |
| 22:00 | Partly cloudy | 8 °C | 0.0 mm | 12 km/h |
| 23:00 | Partly cloudy | 7 °C | 0.0 mm | 10 km/h |
| 00:00 | Partly cloudy | 7 °C | 0.0 mm | 9 km/h |
| 01:00 | Fog | 6 °C | 0.0 mm | 8 km/h |
| 02:00 | Fog | 7 °C | 0.0 mm | 8 km/h |
| 03:00 | Fog | 7 °C | 0.0 mm | 10 km/h |
| 04:00 | Fog | 7 °C | 0.0 mm | 8 km/h |
| 05:00 | Fog | 7 °C | 0.0 mm | 9 km/h |
| 06:00 | Light rain | 7 °C | 0.1 mm | 9 km/h |
| 07:00 | Light rain | 7 °C | 0.2 mm | 9 km/h |
| 08:00 | Rain | 8 °C | 0.3 mm | 11 km/h |
| 09:00 | Light rain showers | 9 °C | 0.2 mm | 11 km/h |
| 10:00 | Light rain showers | 11 °C | 0.1 mm | 13 km/h |
| 11:00 | Partly cloudy | 13 °C | 0.0 mm | 13 km/h |
Next 7 days
| Day | Conditions | Low | High | Rain outlook |
|---|---|---|---|---|
| Fri 16/10 | Rain showers | 6 °C | 13 °C | rain possible · 1.7 mm |
| Sat 17/10 | Light rain showers | 4 °C | 15 °C | rain possible · 1.4 mm |
| Sun 18/10 | Light rain showers | 3 °C | 17 °C | rain possible · 4.6 mm |
| Tue 20/10 | Rain showers | 7 °C | 19 °C | rain likely · 6.8 mm |
| Wed 21/10 | Light rain showers | 7 °C | 21 °C | rain possible · 1.3 mm |
| Thu 22/10 | Light rain showers | 11 °C | 20 °C | rain likely · 1.8 mm |
| Fri 23/10 | Rain showers | 11 °C | 22 °C | rain likely · 3.3 mm |
This column is our own reading: the global model does not publish a probability of precipitation for this region, so we classify the day from the forecast symbol and the total in millimetres. It is not an official probability figure.
Australia/Sydney
What each number means
- Rain (mm)
- 1 millimetre of rain is 1 litre of water per square metre. Up to 2 mm in a day is drizzle; from 10 mm it is proper rain; more than 50 mm in a few hours is the amount that floods streets.
- Humidity
- Relative humidity is how much water vapour the air holds compared with the most it can hold at that temperature. Above 80% sweat evaporates slowly and heat feels worse; below 30% your throat and eyes dry out.
- Dew point
- The dew point is the temperature at which the air would start to condense. The closer it is to the air temperature, the muggier it feels. Above 20 °C the air already feels heavy.
- Feels like
- "Feels like" combines temperature, wind and humidity: strong wind carries heat away from the body, so it feels colder than the thermometer; high humidity in the heat makes it feel warmer.
- Wind
- Wind is given as a speed and the direction it blows from. Up to 20 km/h you barely notice it; at 40 km/h it moves branches and parasols; above 60 km/h it brings down trees and roof tiles.
- Cloud cover
- Cloud cover as a percentage is how much of the sky is covered. Up to 20% is a clear sky; above 80% the sun barely gets through.
- Chance of rain
- The model does not publish a probability of precipitation for this region. This column is our own reading: the global model does not publish a probability of precipitation for this region, so we classify the day from the forecast symbol and the total in millimetres. It is not an official probability figure.
Month-by-month climate
In October, Blue Mountains averages 17 °C and about 69 mm of rain over the month, on the 25-year Meteorological and Solar Monthly & Annual Climatologies (January 2001 - December 2025) climatology.
Warmest month
January
Coldest month
July
Wettest month
February
Driest month
August
| Month | Mean temperature | Rain | Mean humidity |
|---|---|---|---|
| January | 24 °C | 94 mm | 62% |
| February | 22 °C | 143 mm | 71% |
| March | 19 °C | 115 mm | 74% |
| April | 16 °C | 81 mm | 75% |
| May | 13 °C | 61 mm | 74% |
| June | 10 °C | 95 mm | 81% |
| July | 9 °C | 48 mm | 76% |
| August | 10 °C | 47 mm | 69% |
| September | 14 °C | 47 mm | 65% |
| October | 17 °C | 69 mm | 62% |
| November | 20 °C | 90 mm | 63% |
| December | 22 °C | 82 mm | 62% |
Frequently asked questions
- Will it rain tomorrow in Blue Mountains?
- rain possible. Rain: 1.4 mm. Low 4 °C, High 15 °C.
- What is the temperature in Blue Mountains right now?
- 12 °C, rain showers. Feels like: 12 °C. Humidity: 72%.
- What will the weather be like at the weekend in Blue Mountains?
- Sat 17/10: light rain showers, 4 °C / 15 °C, rain possible. Sun 18/10: light rain showers, 3 °C / 17 °C, rain possible.
- Which is the wettest month in Blue Mountains?
- February — ~143 mm (25-year Meteorological and Solar Monthly & Annual Climatologies (January 2001 - December 2025), NASA POWER).
- How far ahead does this Blue Mountains forecast go?
- This page shows 7 days. The model run used here is from 16/10/2026, 01:18 UTC, and the page fetches a new one every 30 minutes.
Nearby cities
Forecasts for places near Blue Mountains:
- Glenmore Park 32 km
- Cranebrook 35 km
- St Clair 43 km
- Mount Druitt 45 km
- Quakers Hill 51 km
- Blacktown 55 km
- Glenwood 56 km
- Prestons 56 km
How to read this page
How to read the min and the max
The week’s high (22 °C) arrives in the afternoon, about two hours after solar noon; the low (3 °C) just before sunrise. Both are air temperature in the shade, two metres above ground — in direct sun or over asphalt a thermometer reads higher.
Where this number comes from
The Blue Mountains forecast comes from MET Norway, a partir do ECMWF HRES e, na área nórdica, do MEPS, run of 16/10/2026, 01:18 UTC. The month-by-month climate comes from NASA POWER, climatology of 25-year Meteorological and Solar Monthly & Annual Climatologies (January 2001 - December 2025). Both are credited in full at the foot of this page.
What a forecast cannot promise
Out to two days accuracy is high; by day seven the trend matters more than the exact figure. For Blue Mountains the model publishes no rain probability, so the expectation column is our reading.
Severe weather warnings
This page is informational. For official warnings of storms, gales or flooding affecting Blue Mountains, go to your national weather service through the World Meteorological Organization warning portal.
Understanding the weather and climate of Blue Mountains
Is this week in Blue Mountains above or below the October normal?
The average of the next 7 days in Blue Mountains works out at 12 °C, against a normal of 17 °C for October over 25-year Meteorological and Solar Monthly & Annual Climatologies (January 2001 - December 2025). That is 5 °C below typical: a cold week for the season in Blue Mountains.
Within the week the highest maximum lands on Fri 23/10 (22 °C) and the lowest minimum on Sun 18/10 (3 °C). Forecast rain adds up to 21 mm, roughly 30% of everything Blue Mountains gets in an average October (69 mm). The wettest day is Tue 20/10, with 6.8 mm.
When is the wettest and the driest month in Blue Mountains?
On the 25-year Meteorological and Solar Monthly & Annual Climatologies (January 2001 - December 2025) climatology, the wettest month in Blue Mountains is February, at about 143 mm, and the driest is August, at 47 mm. February takes 3 times more than August, so rain in Blue Mountains has a real season even though it never stops altogether. For October, the month you are reading this in, the average is 69 mm.
What does the dew point say about how Blue Mountains feels?
Right now in Blue Mountains the air is at 12 °C with a dew point of 7 °C and relative humidity of 72%. With the two values that close, sweat evaporates slowly and the heat weighs more than the thermometer suggests — that is the working definition of muggy.
What is the climate of Blue Mountains like through the year?
The warmest month in Blue Mountains is January (24 °C on average) and the coldest is July (9 °C), a swing of about 14 °C around an annual mean of 16 °C. A swing of this size means a genuinely temperate climate: summer and winter call for different clothes, different housing and different habits.
Because Blue Mountains lies in the southern hemisphere, at 33.71° south, summer falls in December, January and February — which is why the warmest month shows up at either end of the calendar.
How far is Blue Mountains from Sydney?
The nearest large city to Blue Mountains is Sydney, about 83 km away in a straight line, to the east, with 5,638,830 inhabitants. At that distance it is already common for Blue Mountains and Sydney to have different days, because a front or a squall line takes hours to cross the gap. Being larger, Sydney shows up in more searches, and plenty of people end up reading its forecast assuming it covers Blue Mountains.
Words on this page
Apparent temperature
The temperature the body actually feels, rather than the one on the thermometer. It combines air temperature with wind, which carries heat away faster, and humidity, which slows the evaporation of sweat. That is why 30 °C in dry air with a breeze is easier than 28 °C in still, muggy air.
Dew point
The temperature air would have to cool to, at constant pressure and moisture, for water to start condensing. The closer the dew point sits to the air temperature, the less room the vapour has and the muggier the day feels.
Millimetre of rain
The depth of water rain would leave on a flat surface with no run-off. One millimetre is one litre per square metre, no matter how large the area measured is.
Standard definition by World Meteorological Organization (WMO) · Millimetre of rain
Relative humidity
How much water vapour the air holds compared with the most it could hold at that temperature, as a percentage. Because that ceiling rises with heat, the same amount of vapour reads high at dawn and low in the afternoon.
Climate normal
The average of a climate element — temperature, rainfall, humidity — computed over a long, standardised period, usually thirty years. It does not predict anything: it says what is typical for that place in that month, and gives you a ruler for calling a week warm or wet.
Standard definition by World Meteorological Organization (WMO) · Climate normal
Forecast model
A program that solves the equations of the atmosphere on a grid of points and steps forward in time from the state observed now. Your city forecast is the model value at the nearest grid point, which is why two neighbouring towns get almost the same numbers.
Standard definition by MET Norway (Meteorologisk institutt) · Forecast model
Model run
The time the model was executed with the latest observations. Every forecast belongs to a run, and runs age: one from six hours ago knows nothing about the shower that started afterwards. It is the first thing to check when two sources disagree.
Standard definition by MET Norway (Meteorologisk institutt) · Model run
Source, model and licence
- Model
- MET Norway, a partir do ECMWF HRES e, na área nórdica, do MEPS
- Model run
- 16/10/2026, 01:18 UTC
- Source
- MET Norway (Meteorologisk institutt) — Locationforecast 2.0 — Based on data from MET Norway. Licence: CC BY 4.0 / NLOD 2.0.
- Month-by-month climate
- NASA POWER — Climatology (MERRA-2, 2001–2020) — The data was obtained from National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project — Climatology API v2. Dados públicos da NASA, citação obrigatória.
- Cities, coordinates and population
- Dados de cidades: GeoNames (CC BY 4.0)
The page fetches fresh data every 30 minutes. Informational content. For severe weather warnings, follow your country’s official weather service and civil protection authority.