April is one of the warmer months of the year in Streaky Bay, with average highs near 22.6°C and lows around 14.3°C (mean 18.5°C). It is about average for rainfall, averaging 20 mm of rainfall and 66% relative humidity across the period.
April is one of the warmer months of the year in Streaky Bay. Across 45 years of records, the warmest April in Streaky Bay was 2018 — when the month averaged 20.8°C — while the coldest was 2024 at 16°C. Typical April days reach 22.6°C with nights near 14.3°C. The long-term trend is warming, about 0.2°C per decade.
April is about average for rainfall in Streaky Bay, averaging 20 mm of rainfall. The wettest April on record was 1983 with 115 mm, while the driest was 1994 at 1 mm.
Relative humidity in Streaky Bay during April averages 66%. The most humid April was 2014 at 74%, and the least humid was 2019 at 56%.
April receives about 4.5 kWh/m²/day of solar energy in Streaky Bay. The sunniest April was 1999 at 5 kWh/m²/day, and the cloudiest were 2002 and 2015 at 3.9.
Average wind speed in Streaky Bay during April is 3.8 m/s. The windiest April was 1986 at 4.7 m/s, while the calmest was 1993 at 3.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.1°C | 18.0°C | 18.8°C | 18.8°C | 18.7°C | +0.6°C |
| Avg High | 22.3°C | 22.2°C | 23.1°C | 22.9°C | 22.7°C | +0.4°C |
| Avg Low | 14.0°C | 13.9°C | 14.5°C | 14.7°C | 14.7°C | +0.7°C |
| Avg Rain | 27 mm | 16 mm | 20 mm | 20 mm | 12 mm | -15 mm |
April temperatures in Streaky Bay have risen by about 0.8°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 7.7°C (1983) to a record high of 35.2°C (2005).
Rainfall in April is about average for rainfall, averaging 20 mm, with a wettest year of 115 mm.
A good time to visit Streaky Bay
April is a good time to visit Streaky Bay, with days averaging 22.6°C and nights around 14.3°C (mean 18.5°C, close to Streaky Bay's yearly average) and low 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 | 23.9°C | 20.2°C | 16.4°C | 32.5°C | 12.9°C | 4 mm | 64% | 3.5 m/s | 4.6 |
| 2024 ❄️ | 20.0°C | 16.0°C | 12.1°C | 24.8°C | 9.3°C | 3 mm | 73% | 3.6 m/s | 4.6 |
| 2023 | 22.8°C | 18.8°C | 14.9°C | 30.5°C | 12.1°C | 14 mm | 65% | 4.2 m/s | 4.3 |
| 2022 | 23.8°C | 19.5°C | 15.2°C | 31.3°C | 12.2°C | 30 mm | 67% | 3.7 m/s | 4.2 |
| 2021 | 23.9°C | 19.5°C | 15.1°C | 31.7°C | 11.6°C | 1 mm | 59% | 3.5 m/s | 4.6 |
| 2020 | 21.9°C | 18.1°C | 14.3°C | 29.7°C | 12.1°C | 22 mm | 69% | 3.8 m/s | 4.2 |
| 2019 | 23.9°C | 19.3°C | 14.8°C | 31.6°C | 10.4°C | 7 mm | 56% | 3.9 m/s | 4.6 |
| 2018 🔥 | 25.3°C | 20.8°C | 16.4°C | 33.7°C | 12.0°C | 5 mm | 64% | 3.8 m/s | 4.7 |
| 2017 | 22.6°C | 18.6°C | 14.5°C | 29.3°C | 12.2°C | 7 mm | 67% | 3.4 m/s | 4.4 |
| 2016 | 22.4°C | 18.3°C | 14.1°C | 27.3°C | 10.1°C | 4 mm | 70% | 3.5 m/s | 4.3 |
| 2015 | 19.9°C | 16.6°C | 13.3°C | 24.8°C | 8.3°C | 35 mm | 69% | 4.1 m/s | 3.9 |
| 2014 | 22.1°C | 18.3°C | 14.5°C | 32.3°C | 11.9°C | 48 mm | 74% | 3.7 m/s | 4.2 |
| 2013 | 23.9°C | 19.7°C | 15.5°C | 30.2°C | 12.4°C | 34 mm | 65% | 3.6 m/s | 4.2 |
| 2012 | 23.4°C | 19.2°C | 14.9°C | 30.8°C | 10.7°C | 16 mm | 62% | 3.4 m/s | 4.5 |
| 2011 | 22.3°C | 17.9°C | 13.5°C | 28.4°C | 10.5°C | 28 mm | 68% | 3.7 m/s | 4.7 |
| 2010 | 23.1°C | 19.1°C | 15.1°C | 29.5°C | 11.5°C | 17 mm | 68% | 3.3 m/s | 4 |
| 2009 | 22.2°C | 18.5°C | 14.8°C | 32.6°C | 11.9°C | 38 mm | 69% | 4.1 m/s | 4.5 |
| 2008 | 23.0°C | 18.7°C | 14.5°C | 29.3°C | 10.8°C | 26 mm | 59% | 4.1 m/s | 4.4 |
| 2007 | 23.9°C | 19.5°C | 15.0°C | 30.2°C | 11.3°C | 48 mm | 65% | 3.8 m/s | 4.5 |
| 2006 | 20.8°C | 17.2°C | 13.7°C | 25.7°C | 9.8°C | 19 mm | 68% | 4.2 m/s | 4.1 |
| 2005 | 24.9°C | 20.0°C | 15.0°C | 35.2°C | 11.1°C | 5 mm | 60% | 3.9 m/s | 4.8 |
| 2004 | 22.7°C | 18.7°C | 14.8°C | 29.1°C | 10.5°C | 27 mm | 69% | 3.5 m/s | 4.1 |
| 2003 | 22.9°C | 18.3°C | 13.7°C | 28.3°C | 10.9°C | 9 mm | 65% | 3.7 m/s | 4.5 |
| 2002 | 24.7°C | 19.8°C | 15.0°C | 30.3°C | 12.2°C | 13 mm | 62% | 3.6 m/s | 3.9 |
| 2001 | 22.8°C | 18.4°C | 13.9°C | 30.1°C | 11.0°C | 2 mm | 63% | 3.7 m/s | 4.6 |
| 2000 | 22.9°C | 18.6°C | 14.4°C | 28.7°C | 10.7°C | 14 mm | 67% | 3.9 m/s | 4.6 |
| 1999 | 22.0°C | 17.2°C | 12.5°C | 30.0°C | 9.4°C | 1 mm | 66% | 3.5 m/s | 5 |
| 1998 | 21.5°C | 17.4°C | 13.3°C | 30.9°C | 9.2°C | 41 mm | 66% | 4.1 m/s | 4.3 |
| 1997 | 23.2°C | 18.8°C | 14.4°C | 28.6°C | 10.5°C | 1 mm | 65% | 3.4 m/s | 4.7 |
| 1996 | 20.8°C | 17.3°C | 13.7°C | 28.6°C | 10.8°C | 8 mm | 70% | 3.9 m/s | 4.6 |
| 1995 | 20.3°C | 16.7°C | 13.1°C | 27.6°C | 9.9°C | 25 mm | 68% | 3.5 m/s | 4.4 |
| 1994 | 22.6°C | 18.3°C | 14.1°C | 28.8°C | 11.4°C | 1 mm | 64% | 3.6 m/s | 4.9 |
| 1993 | 23.8°C | 19.1°C | 14.4°C | 29.3°C | 11.7°C | 1 mm | 61% | 3.2 m/s | 4.6 |
| 1992 | 22.1°C | 18.3°C | 14.5°C | 31.1°C | 9.8°C | 41 mm | 67% | 3.3 m/s | 4.2 |
| 1991 | 22.7°C | 18.6°C | 14.5°C | 32.2°C | 10.7°C | 26 mm | 64% | 3.9 m/s | 4.5 |
| 1990 | 22.5°C | 18.5°C | 14.6°C | 28.8°C | 10.4°C | 13 mm | 65% | 4.4 m/s | 4.7 |
| 1989 | 21.8°C | 18.0°C | 14.1°C | 28.7°C | 12.0°C | 20 mm | 69% | 3.8 m/s | 4.4 |
| 1988 | 22.7°C | 18.4°C | 14.1°C | 28.4°C | 10.9°C | 1 mm | 67% | 3.9 m/s | 4.6 |
| 1987 | 23.3°C | 18.6°C | 14.0°C | 30.4°C | 9.7°C | 17 mm | 61% | 3.6 m/s | 4.6 |
| 1986 | 21.8°C | 18.1°C | 14.4°C | 33.4°C | 10.3°C | 20 mm | 63% | 4.7 m/s | 4.7 |
| 1985 | 22.7°C | 18.4°C | 14.1°C | 32.1°C | 10.8°C | 25 mm | 59% | 3.9 m/s | 4.7 |
| 1984 | 21.9°C | 17.6°C | 13.4°C | 29.6°C | 10.2°C | 29 mm | 67% | 4 m/s | 4.3 |
| 1983 🌧️ | 20.0°C | 16.6°C | 13.1°C | 25.2°C | 7.7°C | 115 mm | 70% | 4.2 m/s | — |
| 1982 | 22.0°C | 18.0°C | 14.0°C | 30.0°C | 10.3°C | 17 mm | 65% | 3.6 m/s | — |
| 1981 | 24.3°C | 19.5°C | 14.8°C | 31.4°C | 9.7°C | 2 mm | 66% | 3.3 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 22.6°C with lows near 14.3°C (mean 18.5°C), based on 45 years of NASA POWER data.
April averages 20 mm of rainfall in Streaky Bay, about average for rainfall. The wettest on record was 115 mm in 1983.
The hottest April reached 35.2°C in 2005. The coldest dipped to 7.7°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.8°C. Daytime highs moved from 22.2°C to 22.9°C and overnight lows from 13.9°C to 14.7°C over the same span.
April is one of the warmer months of the year in Streaky Bay and about average for rainfall, so plan for around 22.6°C daytime highs and 14.3°C at night.
Not quite — April is the 7th coolest month in Streaky Bay, averaging 18.5°C.
For April in Streaky Bay, pack light layers you can adjust through the day, with typical highs of 22.6°C and lows of 14.3°C.
Relative humidity in April averages 66% — moderately humid.
Average wind speed in April is 3.8 m/s. The windiest April on record averaged 4.7 m/s (1986).
The wettest April on record was 1983 with 115 mm. On average, April sees 20 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 Streaky Bay 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.
