January in Blue Mountains — reliably good (6th best month)
Good · 8.1/10January averages 19°C (67°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
At 142 mm this is a genuinely wet month: about 25 sunny days in total, and outdoor plans need an indoor fallback.
It scores 8.1/10 here, 6th of 12 months, against 9.5/10 in the destination's best month.
Expect peak pricing, and crowds are moderate.
Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
February in Blue Mountains — the year's strongest window
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 sunny days and 13.2 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Blue Mountains at 9/10 — the reference point every other month on this page is measured against.
Expect mid-season pricing, and 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 — reliably good (7th best month)
Good · 7.5/10March averages 17°C (63°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
At 141 mm this is a genuinely wet month: about 17 sunny days in total, and outdoor plans need an indoor fallback.
It scores 7.5/10 here, 7th of 12 months, against 9.5/10 in the destination's best month.
Expect 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 — workable with trade-offs
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 sunny days 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.
Expect mid-season pricing, and 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.
If your dates are flexible, December is materially better in Blue Mountains — 2.8 points higher on the same scale.
May in Blue Mountains — workable with trade-offs
Trade-offs · 6.3/10May averages 9°C (48°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 42 mm of rain — occasional showers rather than washed-out days — alongside about 5 sunny days and 10.3 daylight hours.
It scores 6.3/10 here, 10th of 12 months, against 9.5/10 in the destination's best month.
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 — workable with trade-offs
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 sunny days 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.
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 — 3.9 points higher on the same scale.
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 sunny days 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.
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, a packable rain layer, footwear you can get muddy.
If your dates are flexible, December is materially better in Blue Mountains — 4.2 points higher on the same scale.
August in Blue Mountains — reliably good (8th best month)
Good · 7/10August averages 9°C (48°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 36 mm of rain — occasional showers rather than washed-out days — alongside about 9 sunny days and 10.7 daylight hours.
It scores 7/10 here, 8th of 12 months, against 9.5/10 in the destination's best month.
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 — the year's strongest window
Best window · 9.1/10September averages 11°C (52°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 40 mm of rain — occasional showers rather than washed-out days — alongside about 19 sunny days and 11.8 daylight hours.
On our climate-comfort scale this is the top-ranked month of the year for Blue Mountains at 9.1/10 — the reference point every other month on this page is measured against.
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.
October in Blue Mountains — the year's strongest window
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 sunny days and 12.9 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Blue Mountains at 9.2/10 — the reference point every other month on this page is measured against.
Expect mid-season pricing, and 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 in Blue Mountains — the year's strongest window
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.
At 114 mm this is a genuinely wet month: about 27 sunny days in total, and outdoor plans need an indoor fallback.
On our climate-comfort scale this is the top-ranked month of the year for Blue Mountains at 8.7/10 — the reference point every other month on this page is measured against.
Expect 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.
December in Blue Mountains — the year's strongest window
Best window · 9.5/10December 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 60 mm, so plan one flexible day in three; you still get about 31 sunny days and 14.2 hours of daylight.
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.
Expect 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.
