January in Blue Mountains: strong conditions, 6th of 12
Good · 8.1/10January averages 19°C (67°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.
Monthly rainfall reaches 142 mm — wet for this destination — but about 25 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 8.1/10 here, 6th of 12 months, against 9.5/10 in the destination's best month.
Plan for peak pricing, with crowds are moderate.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
February ranks 4th of 12 for Blue Mountains — one of the best windows
Best window · 9/10February averages 19°C (66°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 82 mm, so plan one flexible day in three; you still get about 22 days with 6+ hours of sunshine and 13.2 hours of daylight.
A 9/10 puts this among the year's best months in Blue Mountains (4th of 12); only December scores higher, at 9.5/10.
Plan for peak pricing, with crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer, footwear you can get muddy.
March in Blue Mountains: strong conditions, 7th of 12
Good · 7.5/10Temperatures hover around 17°C (63°F) — the kind of month where neither heat nor cold forces the schedule.
141 mm of rain signals a properly wet month, with only about 17 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 7.5/10 on the same scale — 7th of 12 months, versus 9.5/10 for the best month here.
Budget for mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella, footwear you can get muddy.
If your dates are flexible, December is materially better in Blue Mountains — 2 points higher on the same scale.
April in Blue Mountains: mixed conditions, plan around the weather
Trade-offs · 6.7/10April averages 13°C (55°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
At 103 mm this is a genuinely wet month: about 10 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 6.7/10 here, 9th of 12 months, against 9.5/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella, footwear you can get muddy.
Flexible dates? December scores 2.8 points higher here — enough to change the trip.
May in Blue Mountains — workable with trade-offs
Trade-offs · 6.3/10Expect 9°C (48°F) in May. A good month for city streets, viewpoints and long meals; leave swimming for another season.
With around 42 mm of rain, any showers tend to pass through rather than settle in; about 5 days with 6+ hours of sunshine and 10.3 hours of daylight fill the rest.
That is 6.3/10 on the same scale — 10th of 12 months, versus 9.5/10 for the best month here.
Expect low-season pricing, and crowds are light for this destination.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, footwear you can get muddy.
If your dates are flexible, December is materially better in Blue Mountains — 3.2 points higher on the same scale.
June in Blue Mountains: mixed conditions, plan around the weather
Trade-offs · 5.6/10June averages 6°C (43°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 27 mm of rain — occasional showers rather than washed-out days — alongside about 2 days with 6+ hours of sunshine and 9.8 daylight hours.
It scores 5.6/10 here, 11th of 12 months, against 9.5/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, footwear you can get muddy.
Flexible dates? December scores 3.9 points higher here — enough to change the trip.
July in Blue Mountains — workable with trade-offs
Trade-offs · 5.3/10July averages 7°C (44°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 63 mm, so plan one flexible day in three; you still get about 4 days with 6+ hours of sunshine and 10 hours of daylight.
It scores 5.3/10 here, 12th of 12 months, against 9.5/10 in the destination's best month.
Plan for low-season pricing, with crowds are light for this destination.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer, footwear you can get muddy.
Flexible dates? December scores 4.2 points higher here — enough to change the trip.
August in Blue Mountains — reliably good (8th best month)
Good · 7/10Expect 9°C (48°F) in August. A good month for city streets, viewpoints and long meals; leave swimming for another season.
With around 36 mm of rain, any showers tend to pass through rather than settle in; about 9 days with 6+ hours of sunshine and 10.7 hours of daylight fill the rest.
That is 7/10 on the same scale — 8th of 12 months, versus 9.5/10 for the best month here.
Expect mid-season pricing, and crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, footwear you can get muddy.
If your dates are flexible, December is materially better in Blue Mountains — 2.5 points higher on the same scale.
September in Blue Mountains — one of the year's strongest windows (3rd)
Best window · 9.1/10Expect 11°C (52°F) in September. A good month for city streets, viewpoints and long meals; leave swimming for another season.
With around 40 mm of rain, any showers tend to pass through rather than settle in; about 19 days with 6+ hours of sunshine and 11.8 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Blue Mountains at 9.1/10 (3rd of 12), just behind December at 9.5/10.
Budget for mid-season pricing, and crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, footwear you can get muddy.
October in Blue Mountains — one of the year's strongest windows (2nd)
Best window · 9.2/10October averages 14°C (56°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 77 mm, so plan one flexible day in three; you still get about 24 days with 6+ hours of sunshine and 12.9 hours of daylight.
A 9.2/10 puts this among the year's best months in Blue Mountains (2nd of 12); only December scores higher, at 9.5/10.
Figure on mid-season pricing, with crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer, footwear you can get muddy.
November is one of the strongest months in Blue Mountains (5th)
Best window · 8.7/10November averages 16°C (61°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Monthly rainfall reaches 114 mm — wet for this destination — but about 27 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
A 8.7/10 puts this among the year's best months in Blue Mountains (5th of 12); only December scores higher, at 9.5/10.
Plan for mid-season pricing, with crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella, footwear you can get muddy.
December: the best month of the year in Blue Mountains
Best window · 9.5/10Temperatures hover around 19°C (66°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 60 mm of rain this month — a flexible day or two helps — with about 31 days with 6+ hours of sunshine and 14.2 hours of daylight to work around it.
On our climate-comfort scale this is the top-ranked month of the year for Blue Mountains at 9.5/10 — the reference point every other month on this page is measured against.
Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer, footwear you can get muddy.
