The Blue Mountains have a temperate climate and, due to their high altitude, are cooler than Sydney, making summers pleasant. However, winters can be cold, often with fog and frost.

Blue Mountains Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Highest Temperature 24 22 21 16 13 10 9 11 15 19 21 22 Lowest Temperature 13 13 11 8 5 3 2 3 5 7 10 11 Precipitation 123 150 101 75 47 93 33 49 53 52 119 92 　Melbourne Highest Temperature 26 26 24 21 17 14 14 15 17 20 22 24 Lowest Temperature 15 16 14 12 10 7 7 7 9 10 12 14 Precipitation 47 46 44 53 68 43 49 57 53 65 57 58 Precipitation number of days 9 8 9 13 14 16 17 17 15 14 13 11

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The time difference of Blue Mountains is UTC+10 UTC+11 for daylight saving time Local time Daylight savings time UTC 0:00 1:00 14:00 1:00 2:00 15:00 2:00 3:00 16:00 3:00 4:00 17:00 4:00 5:00 18:00 5:00 6:00 19:00 6:00 7:00 20:00 7:00 8:00 21:00 8:00 9:00 22:00 9:00 10:00 23:00 10:00 11:00 0:00 11:00 12:00 1:00 12:00 13:00 2:00 13:00 14:00 3:00 14:00 15:00 4:00 15:00 16:00 5:00 16:00 17:00 6:00 17:00 18:00 7:00 18:00 19:00 8:00 19:00 20:00 9:00 20:00 21:00 10:00 21:00 22:00 11:00 22:00 23:00 12:00 23:00 0:00 13:00