January is one of the cooler months of the year in Seaford, with average highs near 7.2°C and lows around 2.8°C (mean 5°C). It is a relatively wet time of year, averaging 78 mm of rainfall and 92% relative humidity across the period.
January is one of the cooler months of the year in Seaford. Across 45 years of records, the warmest January in Seaford was 2007 — when the month averaged 7.4°C — while the coldest was 1987 at 0.5°C. Typical January days reach 7.2°C with nights near 2.8°C. The long-term trend is warming, about 0.2°C per decade.
January is a relatively wet time of year in Seaford, averaging 78 mm of rainfall. The wettest January on record was 1988 with 155 mm, while the driest was 1997 at 17 mm.
Relative humidity in Seaford during January averages 92%. The most humid January was 2021 at 94%, and the least humid was 1987 at 88%.
January receives about 0.9 kWh/m²/day of solar energy in Seaford. The sunniest January was 1989 at 1.1 kWh/m²/day, and the cloudiest were 2018, 2020 and 2021, among others at 0.8.
Average wind speed in Seaford during January is 4.8 m/s. The windiest Januarys were 1995 and 2007 at 6 m/s, while the calmest was 2022 at 3.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 4.2°C | 5.2°C | 5.5°C | 4.9°C | 5.3°C | +1.1°C |
| Avg High | 6.4°C | 7.4°C | 7.6°C | 7.2°C | 7.7°C | +1.3°C |
| Avg Low | 1.9°C | 3.0°C | 3.4°C | 2.7°C | 2.9°C | +1°C |
| Avg Rain | 79 mm | 79 mm | 70 mm | 82 mm | 80 mm | +1 mm |
January temperatures in Seaford have risen by about 0.8°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -7.2°C (1987) to a record high of 13°C (2007).
Rainfall in January is a relatively wet time of year, averaging 78 mm, with a wettest year of 155 mm.
A quieter season to visit Seaford
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Seaford. That said, January — with days averaging 7.2°C and nights around 2.8°C (mean 5°C) and moderate rainfall (78 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 7.1°C | 4.7°C | 2.3°C | 11.8°C | -1.3°C | 98 mm | 91% | 3.9 m/s | 0.9 |
| 2024 | 7.4°C | 5.1°C | 2.8°C | 12.7°C | -3.0°C | 68 mm | 90% | 4.8 m/s | 1 |
| 2023 | 8.1°C | 5.7°C | 3.2°C | 12.1°C | -2.2°C | 94 mm | 93% | 4.9 m/s | 0.9 |
| 2022 | 8.1°C | 5.4°C | 2.8°C | 12.1°C | -1.8°C | 33 mm | 92% | 3.5 m/s | 1 |
| 2021 | 6.3°C | 4.0°C | 1.7°C | 11.6°C | -2.0°C | 114 mm | 94% | 4.3 m/s | 0.8 |
| 2020 | 8.9°C | 6.8°C | 4.7°C | 12.4°C | -0.6°C | 74 mm | 93% | 4.5 m/s | 0.8 |
| 2019 | 6.4°C | 3.9°C | 1.5°C | 10.3°C | -1.8°C | 34 mm | 91% | 4 m/s | 0.9 |
| 2018 | 8.7°C | 6.4°C | 4.0°C | 12.0°C | 0.8°C | 85 mm | 92% | 5.2 m/s | 0.8 |
| 2017 | 6.5°C | 4.1°C | 1.8°C | 9.8°C | -1.2°C | 81 mm | 91% | 3.6 m/s | 1 |
| 2016 | 8.4°C | 6.2°C | 4.1°C | 12.1°C | -1.3°C | 128 mm | 90% | 5.2 m/s | 0.9 |
| 2015 | 7.9°C | 5.1°C | 2.2°C | 12.4°C | -1.6°C | 99 mm | 91% | 5.1 m/s | 0.9 |
| 2014 | 8.9°C | 6.9°C | 5.0°C | 11.6°C | 1.6°C | 118 mm | 92% | 5.2 m/s | 0.8 |
| 2013 | 6.0°C | 4.3°C | 2.5°C | 11.7°C | -1.8°C | 69 mm | 92% | 4.2 m/s | 0.8 |
| 2012 | 8.5°C | 6.0°C | 3.6°C | 11.9°C | -0.9°C | 49 mm | 91% | 4.7 m/s | 0.9 |
| 2011 | 6.5°C | 4.4°C | 2.3°C | 11.2°C | -1.6°C | 92 mm | 93% | 4.4 m/s | 0.9 |
| 2010 | 4.0°C | 2.0°C | 0.0°C | 7.5°C | -4.2°C | 63 mm | 92% | 3.8 m/s | 0.8 |
| 2009 | 5.6°C | 3.7°C | 1.7°C | 9.6°C | -4.4°C | 78 mm | 90% | 4.3 m/s | 0.9 |
| 2008 | 9.4°C | 7.1°C | 4.9°C | 12.0°C | -0.2°C | 95 mm | 91% | 5.8 m/s | 0.8 |
| 2007 🔥 | 9.6°C | 7.4°C | 5.2°C | 13.0°C | -1.2°C | 69 mm | 91% | 6 m/s | 0.8 |
| 2006 | 6.7°C | 4.6°C | 2.6°C | 11.0°C | -1.6°C | 30 mm | 91% | 4.2 m/s | 0.8 |
| 2005 | 8.5°C | 6.4°C | 4.3°C | 11.9°C | -0.4°C | 38 mm | 90% | 5.6 m/s | 1 |
| 2004 | 7.9°C | 5.7°C | 3.4°C | 11.9°C | -2.2°C | 102 mm | 92% | 5.3 m/s | 0.8 |
| 2003 | 6.6°C | 4.6°C | 2.5°C | 12.2°C | -2.5°C | 78 mm | 92% | 5.3 m/s | 0.9 |
| 2002 | 8.1°C | 6.0°C | 4.0°C | 11.7°C | -2.3°C | 72 mm | 93% | 4.9 m/s | 0.9 |
| 2001 | 6.1°C | 4.3°C | 2.5°C | 10.6°C | -2.1°C | 113 mm | 93% | 4.5 m/s | 1 |
| 2000 | 7.3°C | 5.1°C | 2.8°C | 11.4°C | -0.3°C | 28 mm | 93% | 4.3 m/s | 1 |
| 1999 | 8.3°C | 6.3°C | 4.3°C | 12.1°C | -0.8°C | 88 mm | 92% | 5.3 m/s | 0.9 |
| 1998 | 8.1°C | 5.8°C | 3.4°C | 11.9°C | -1.5°C | 101 mm | 91% | 5.4 m/s | 1 |
| 1997 | 4.3°C | 2.2°C | 0.2°C | 8.7°C | -4.7°C | 17 mm | 93% | 3.7 m/s | 0.9 |
| 1996 | 6.5°C | 5.1°C | 3.6°C | 10.2°C | -3.3°C | 54 mm | 93% | 4.8 m/s | 0.9 |
| 1995 | 8.0°C | 5.5°C | 3.0°C | 11.0°C | -1.8°C | 144 mm | 92% | 6 m/s | 0.8 |
| 1994 | 7.9°C | 5.3°C | 2.8°C | 11.3°C | -1.6°C | 111 mm | 93% | 5.2 m/s | 0.8 |
| 1993 | 8.7°C | 6.4°C | 4.0°C | 12.3°C | -2.7°C | 75 mm | 92% | 5.5 m/s | 0.8 |
| 1992 | 6.2°C | 4.0°C | 1.9°C | 10.5°C | -2.0°C | 18 mm | 91% | 3.9 m/s | 1 |
| 1991 | 6.6°C | 4.5°C | 2.4°C | 11.2°C | -1.1°C | 83 mm | 89% | 4.7 m/s | 0.9 |
| 1990 | 9.0°C | 6.9°C | 4.8°C | 11.4°C | 1.2°C | 98 mm | 93% | 5.4 m/s | 0.9 |
| 1989 | 8.4°C | 6.0°C | 3.6°C | 10.6°C | -0.1°C | 31 mm | 91% | 3.6 m/s | 1.1 |
| 1988 🌧️ | 8.1°C | 6.1°C | 4.2°C | 11.7°C | 0.2°C | 155 mm | 93% | 5.2 m/s | 0.9 |
| 1987 ❄️ | 2.5°C | 0.5°C | -1.5°C | 10.8°C | -7.2°C | 36 mm | 88% | 3.8 m/s | 0.8 |
| 1986 | 6.3°C | 4.0°C | 1.7°C | 10.7°C | -2.7°C | 116 mm | 90% | 5.7 m/s | 0.8 |
| 1985 | 3.3°C | 1.2°C | -0.9°C | 10.2°C | -6.4°C | 66 mm | 91% | 4.4 m/s | 0.9 |
| 1984 | 7.1°C | 4.5°C | 2.0°C | 12.0°C | -1.2°C | 130 mm | 89% | 5.9 m/s | 0.9 |
| 1983 | 9.0°C | 6.6°C | 4.2°C | 12.1°C | -2.1°C | 70 mm | 92% | 5.9 m/s | — |
| 1982 | 5.8°C | 3.9°C | 2.1°C | 10.8°C | -4.7°C | 62 mm | 93% | 4.6 m/s | — |
| 1981 | 7.0°C | 4.6°C | 2.1°C | 10.1°C | -2.1°C | 43 mm | 92% | 4.3 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 7.2°C with lows near 2.8°C (mean 5°C), based on 45 years of NASA POWER data.
January averages 78 mm of rainfall in Seaford, a relatively wet time of year. The wettest on record was 155 mm in 1988.
The hottest January reached 13°C in 2007. The coldest dipped to -7.2°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.8°C. Daytime highs moved from 6.4°C to 7.4°C and overnight lows from 1.9°C to 2.6°C over the same span.
January is one of the cooler months of the year in Seaford and a relatively wet time of year, so plan for around 7.2°C daytime highs and 2.8°C at night.
Yes — January is the coldest month of the year in Seaford, averaging 5°C.
For January in Seaford, pack warm layers and a jacket for chilly mornings, with typical highs of 7.2°C and lows of 2.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 92% — quite humid.
Average wind speed in January is 4.8 m/s. The windiest January on record averaged 6 m/s (1995).
The wettest January on record was 1988 with 155 mm. On average, January sees 78 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 Seaford behaves each January, 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 January specifically, along with year-by-year records and how the month has changed over the decades.
