April is close to Katoomba's year-round average, with average highs near 18.9°C and lows around 8.6°C (mean 13.8°C). It is about average for rainfall, averaging 61 mm of rainfall and 74% relative humidity across the period.
April is close to Katoomba's year-round average. Across 45 years of records, the warmest April in Katoomba was 2018 — when the month averaged 17.3°C — while the coldest was 1995 at 11.5°C. Typical April days reach 18.9°C with nights near 8.6°C. The long-term April temperature trend is broadly flat.
April is about average for rainfall in Katoomba, averaging 61 mm of rainfall. The wettest April on record was 1990 with 236 mm, while the driest was 1997 at 5 mm.
Relative humidity in Katoomba during April averages 74%. The most humid April was 1989 at 90%, and the least humid was 2006 at 59%.
April receives about 3.8 kWh/m²/day of solar energy in Katoomba. The sunniest April was 2006 at 4.6 kWh/m²/day, and the cloudiest was 1988 at 2.6.
Average wind speed in Katoomba during April is 0.4 m/s. The windiest Aprils were 1995, 2006 and 2020, among others at 0.5 m/s, while the calmest was 2002 at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.6°C | 13.4°C | 14.1°C | 14.2°C | 13.3°C | -0.3°C |
| Avg High | 18.4°C | 18.8°C | 19.3°C | 19.3°C | 18.1°C | -0.3°C |
| Avg Low | 8.7°C | 8.0°C | 8.8°C | 9.0°C | 8.5°C | -0.2°C |
| Avg Rain | 91 mm | 54 mm | 44 mm | 50 mm | 74 mm | -17 mm |
April temperatures in Katoomba have stayed relatively stable across the record.
April has ranged from a record low of -0.1°C (2008) to a record high of 31.1°C (1986).
Rainfall in April is about average for rainfall, averaging 61 mm, with a wettest year of 236 mm.
A good time to visit Katoomba
April is a good time to visit Katoomba, with days averaging 18.9°C and nights around 8.6°C (mean 13.8°C, close to Katoomba's yearly average) and moderate rainfall. January and February are marginally more temperate, but April still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 20.5°C | 15.1°C | 9.7°C | 24.8°C | 5.1°C | 42 mm | 71% | 0.4 m/s | 3.9 |
| 2024 | 18.3°C | 13.4°C | 8.4°C | 27.5°C | 3.0°C | 158 mm | 78% | 0.4 m/s | 3.8 |
| 2023 | 17.8°C | 13.0°C | 8.3°C | 20.9°C | 3.0°C | 66 mm | 80% | 0.4 m/s | 3.6 |
| 2022 | 17.2°C | 13.3°C | 9.5°C | 21.0°C | 5.2°C | 85 mm | 86% | 0.4 m/s | 3.4 |
| 2021 | 17.4°C | 12.2°C | 7.0°C | 23.2°C | 0.5°C | 19 mm | 76% | 0.4 m/s | 4.5 |
| 2020 | 17.6°C | 13.0°C | 8.4°C | 21.9°C | 2.4°C | 71 mm | 80% | 0.5 m/s | 3.7 |
| 2019 | 21.1°C | 15.4°C | 9.7°C | 24.9°C | 4.0°C | 8 mm | 71% | 0.4 m/s | 4.1 |
| 2018 🔥 | 23.2°C | 17.3°C | 11.4°C | 29.9°C | 7.1°C | 20 mm | 65% | 0.4 m/s | 4.2 |
| 2017 | 17.7°C | 12.7°C | 7.7°C | 20.5°C | 1.9°C | 23 mm | 79% | 0.4 m/s | 4 |
| 2016 | 22.1°C | 16.4°C | 10.7°C | 27.9°C | 7.6°C | 9 mm | 68% | 0.4 m/s | 3.8 |
| 2015 | 17.2°C | 12.8°C | 8.3°C | 23.9°C | 1.5°C | 200 mm | 83% | 0.4 m/s | 3.2 |
| 2014 | 18.5°C | 13.8°C | 9.1°C | 24.9°C | 3.7°C | 61 mm | 80% | 0.4 m/s | 3.6 |
| 2013 | 19.1°C | 13.5°C | 8.0°C | 23.5°C | 2.8°C | 37 mm | 73% | 0.4 m/s | 4.1 |
| 2012 | 17.8°C | 13.1°C | 8.4°C | 23.7°C | 1.6°C | 53 mm | 81% | 0.4 m/s | 3.8 |
| 2011 | 17.3°C | 12.6°C | 8.0°C | 22.4°C | 3.0°C | 47 mm | 79% | 0.4 m/s | 3.4 |
| 2010 | 19.5°C | 14.2°C | 8.9°C | 23.3°C | 3.9°C | 42 mm | 74% | 0.4 m/s | 4 |
| 2009 | 17.2°C | 13.0°C | 8.9°C | 23.3°C | 1.8°C | 64 mm | 79% | 0.4 m/s | 3.4 |
| 2008 | 16.6°C | 11.7°C | 6.8°C | 21.7°C | -0.1°C | 55 mm | 76% | 0.4 m/s | 3.5 |
| 2007 | 19.5°C | 14.4°C | 9.3°C | 24.1°C | 7.3°C | 52 mm | 73% | 0.4 m/s | 3.7 |
| 2006 | 19.2°C | 12.9°C | 6.5°C | 24.9°C | 0.3°C | 11 mm | 59% | 0.5 m/s | 4.6 |
| 2005 | 22.7°C | 16.6°C | 10.5°C | 27.0°C | 6.3°C | 15 mm | 66% | 0.4 m/s | 4 |
| 2004 | 21.9°C | 15.8°C | 9.7°C | 29.1°C | 4.8°C | 15 mm | 65% | 0.4 m/s | 4.1 |
| 2003 | 18.3°C | 13.6°C | 9.0°C | 22.6°C | 6.3°C | 43 mm | 77% | 0.4 m/s | 3.4 |
| 2002 | 20.4°C | 15.2°C | 9.9°C | 25.3°C | 5.8°C | 35 mm | 76% | 0.3 m/s | 3.8 |
| 2001 | 20.0°C | 14.4°C | 8.9°C | 25.5°C | 2.7°C | 88 mm | 69% | 0.4 m/s | 3.9 |
| 2000 | 17.4°C | 13.0°C | 8.7°C | 22.5°C | 0.5°C | 59 mm | 83% | 0.4 m/s | 3.5 |
| 1999 | 17.0°C | 12.4°C | 7.7°C | 20.8°C | 2.7°C | 57 mm | 77% | 0.4 m/s | 3.6 |
| 1998 | 20.1°C | 14.7°C | 9.3°C | 27.9°C | 3.9°C | 89 mm | 71% | 0.4 m/s | 3.6 |
| 1997 | 21.1°C | 14.7°C | 8.3°C | 24.0°C | 1.0°C | 5 mm | 61% | 0.4 m/s | 4.4 |
| 1996 | 18.4°C | 12.4°C | 6.4°C | 25.4°C | 0.8°C | 17 mm | 64% | 0.4 m/s | 4.1 |
| 1995 ❄️ | 17.3°C | 11.5°C | 5.8°C | 21.8°C | 1.1°C | 12 mm | 66% | 0.5 m/s | 4.2 |
| 1994 | 19.2°C | 13.6°C | 8.0°C | 24.4°C | 1.1°C | 45 mm | 71% | 0.4 m/s | 4.2 |
| 1993 | 20.5°C | 14.8°C | 9.1°C | 24.0°C | 6.2°C | 15 mm | 69% | 0.4 m/s | 4 |
| 1992 | 17.4°C | 12.9°C | 8.3°C | 23.0°C | 3.1°C | 45 mm | 79% | 0.4 m/s | 3.6 |
| 1991 | 20.0°C | 13.5°C | 7.1°C | 26.5°C | 2.3°C | 16 mm | 63% | 0.4 m/s | 4.3 |
| 1990 🌧️ | 16.5°C | 13.3°C | 10.1°C | 23.1°C | 2.0°C | 236 mm | 88% | 0.5 m/s | 2.9 |
| 1989 | 17.2°C | 13.8°C | 10.5°C | 21.3°C | 6.4°C | 182 mm | 90% | 0.4 m/s | 3.1 |
| 1988 | 16.9°C | 13.3°C | 9.8°C | 20.7°C | 6.5°C | 222 mm | 88% | 0.5 m/s | 2.6 |
| 1987 | 19.4°C | 13.8°C | 8.1°C | 24.2°C | 1.4°C | 14 mm | 71% | 0.4 m/s | 4.1 |
| 1986 | 21.0°C | 14.7°C | 8.4°C | 31.1°C | 2.0°C | 33 mm | 60% | 0.5 m/s | 4.2 |
| 1985 | 17.2°C | 13.1°C | 9.0°C | 24.2°C | 2.6°C | 90 mm | 80% | 0.4 m/s | 3.5 |
| 1984 | 18.0°C | 13.0°C | 8.0°C | 23.1°C | 2.0°C | 98 mm | 80% | 0.4 m/s | 3.7 |
| 1983 | 16.6°C | 12.1°C | 7.5°C | 22.1°C | 1.0°C | 76 mm | 77% | 0.4 m/s | — |
| 1982 | 19.3°C | 13.8°C | 8.2°C | 23.1°C | 0.9°C | 14 mm | 71% | 0.4 m/s | — |
| 1981 | 20.3°C | 14.6°C | 8.9°C | 23.3°C | 2.0°C | 89 mm | 67% | 0.4 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 18.9°C with lows near 8.6°C (mean 13.8°C), based on 45 years of NASA POWER data.
April averages 61 mm of rainfall in Katoomba, about average for rainfall. The wettest on record was 236 mm in 1990.
The hottest April reached 31.1°C in 1986. The coldest dipped to -0.1°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.1°C — but days and nights have moved in opposite directions. Overnight lows rose from 8.3°C to 8.6°C while daytime highs eased from 18.3°C to 18.2°C, narrowing the gap between day and night.
April is close to Katoomba's year-round average and about average for rainfall, so plan for around 18.9°C daytime highs and 8.6°C at night.
Not quite — April is the 7th coolest month in Katoomba, averaging 13.8°C.
For April in Katoomba, pack light layers you can adjust through the day, with typical highs of 18.9°C and lows of 8.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 74% — moderately humid.
Average wind speed in April is 0.4 m/s. The windiest April on record averaged 0.5 m/s (1986).
The wettest April on record was 1990 with 236 mm. On average, April sees 61 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Katoomba behaves each April, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for April specifically, along with year-by-year records and how the month has changed over the decades.
