Newcastle Weather in September

Newcastle in September sees very high daytime temperatures of 30°C (86°F) and nighttime lows of 25°C (77°F). Rainfall is fairly high this month at around 142 mm (5.6 in), so pack a rain jacket to stay dry.

Rainfall in Newcastle in September

The climate data from previous years indicates about 15 days of rain, averaging 142 mm (5.6 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Newcastle in September

If you're visiting Newcastle in September, expect highs of 30°C (86°F) and overnight lows around 25°C (77°F). For most visitors, the main thing to prepare for is the heat during the day. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.

Sunshine in Newcastle in September

The city usually sees around 228 hours of sunlight, indicating many sunny days — a great month for sightseeing.

Wind Speed in Newcastle in September

Average wind speeds reach 3 m/s (6 knots) in September, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

Average water temperature in September

At 29°C (84°F), the water is very warm — more like a heated pool than the sea. Great for those who like warm water, though some may find it less refreshing on a hot day.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April and December typically offer the best weather for Newcastle.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Jamaica, check out our Newcastle's climate page.

Newcastle Temperature in September

Min Temperature 25°C (77°F)  

Max Temperature 30°C (86°F)  

Water Temperature 29°C (84°F) *  

Chance of Rain 48%  

Precipitation 142 mm (5.6 in)  

Rainy days 15 days  

Humidity 78% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 228 hours *  

Percentage Sunshine *  

* Data from: Kingston, Jamaica (16 KM, 10 Miles).

Daily Historical Temperatures

49-year average (1976-2025)

Based on our historical records, temperatures in Newcastle typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).

Average temperatures in September

‹ Select year to compare to 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 ›

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

‹ January February March April May June July August September October November December ›

Daily Historical Precipitation

49-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in September

‹ Select year to compare to 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 ›

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

‹ January February March April May June July August September October November December ›

Historical weather for Newcastle in September

Browse day-by-day weather records for Newcastle spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

‹ 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 ›

‹ January February March April May June July August September October November December ›

Newcastle historical weather extremes in September

Based on 20 years of weather observations in Newcastle between 2005 and 2025, these are the recorded extremes.

• On September 25, 2006, temperatures climbed to 35°C (95°F), marking the warmest September day on record.
• On September 28, 2010, Newcastle saw its coldest September day with temperatures maxing out at 26°C (79°F).
• Nighttime temperatures dropped to 22°C (72°F) on September 29, 2010, marking the coldest September night on record.

What to Wear in Newcastle in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Expect water temperatures of around 29°C (84°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Newcastle in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Jamaica, check out our Newcastle's climate page.

More climate data for Newcastle

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Newcastle climate overview or explore weather in Jamaica.