Climate Insights for Grafton

Clarence Valley Council, New South Wales, Australia

Hottest
January
29°C peak84°F peak
Coldest
July
8°C low46°F low
Wettest
March
187 mm rain7.4 in rain
Best to Visit
April, May, September
Mild temps & low rain

Climate Overview

The climate in Grafton is warm and mild. The average annual temperature is 19°C and approximately 1,042 mm of precipitation falls per year. Grafton receives a notable amount of rainfall throughout the year, including during its driest month. Grafton is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: January, December, February. The coldest months are July, August, June, when temperatures can drop to 8°C.The climate in Grafton is warm and mild. The average annual temperature is 66°F and approximately 41 in of precipitation falls per year. Grafton receives a notable amount of rainfall throughout the year, including during its driest month. Grafton is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: January, December, February. The coldest months are July, August, June, when temperatures can drop to 46°F.

Temperature

0°5°10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 29°Average: 24°Min: 20°FebMax: 28°Average: 24°Min: 20°MarMax: 27°Average: 22°Min: 19°AprMax: 25°Average: 19°Min: 15°MayMax: 22°Average: 16°Min: 12°JunMax: 20°Average: 13°Min: 9°JulMax: 20°Average: 13°Min: 8°AugMax: 21°Average: 14°Min: 9°SepMax: 24°Average: 17°Min: 11°OctMax: 26°Average: 19°Min: 15°NovMax: 27°Average: 21°Min: 17°DecMax: 29°Average: 23°Min: 19°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°F90°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 84°FAverage: 75°FMin: 68°FFebMax: 83°FAverage: 74°FMin: 67°FMarMax: 80°FAverage: 72°FMin: 66°FAprMax: 76°FAverage: 67°FMin: 59°FMayMax: 72°FAverage: 61°FMin: 53°FJunMax: 67°FAverage: 56°FMin: 48°FJulMax: 67°FAverage: 55°FMin: 46°FAugMax: 70°FAverage: 58°FMin: 48°FSepMax: 75°FAverage: 63°FMin: 52°FOctMax: 78°FAverage: 67°FMin: 58°FNovMax: 81°FAverage: 70°FMin: 62°FDecMax: 84°FAverage: 74°FMin: 66°F
Max
Average
Min

Temperatures in Grafton vary considerably across the year, with a 21°C difference between the coldest and warmest months. The warmest month is January, when average highs reach 29°C and the mean temperature sits around 24°C. July is the coolest month, with minimum temperatures around 8°C and an average of 13°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 3°C shift in average temperatures.Temperatures in Grafton vary considerably across the year, with a 38°F difference between the coldest and warmest months. The warmest month is January, when average highs reach 84°F and the mean temperature sits around 75°F. July is the coolest month, with minimum temperatures around 46°F and an average of 55°F. On average, daily temperatures fluctuate by about 19°F between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 6°F shift in average temperatures.

Precipitation

0mm50mm100mm150mm200mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 120mmFebPrecipitation: 141mmMarPrecipitation: 187mmAprPrecipitation: 58mmMayPrecipitation: 52mmJunPrecipitation: 58mmJulPrecipitation: 34mmAugPrecipitation: 44mmSepPrecipitation: 53mmOctPrecipitation: 92mmNovPrecipitation: 89mmDecPrecipitation: 115mm
Precipitation
0in2in4in6in8inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 4.7inFebPrecipitation: 5.5inMarPrecipitation: 7.4inAprPrecipitation: 2.3inMayPrecipitation: 2inJunPrecipitation: 2.3inJulPrecipitation: 1.3inAugPrecipitation: 1.7inSepPrecipitation: 2.1inOctPrecipitation: 3.6inNovPrecipitation: 3.5inDecPrecipitation: 4.5in
Precipitation

Grafton is a moderately rainy area, receiving approximately 1,042 mm of precipitation annually, which averages out to around 87 mm per month. The wettest month is March, averaging 187 mm of rainfall. February and January also tend to see above-average precipitation. The driest month is July, with just 34 mm. That's 153 mm less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.Grafton is a moderately rainy area, receiving approximately 41 in of precipitation annually, which averages out to around 3.4 in per month. The wettest month is March, averaging 7.4 in of rainfall. February and January also tend to see above-average precipitation. The driest month is July, with just 1.3 in. That's 6 in less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Wind

0km/h5km/h10km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 9km/hFebWind Speed: 9km/hMarWind Speed: 9km/hAprWind Speed: 9km/hMayWind Speed: 8km/hJunWind Speed: 9km/hJulWind Speed: 9km/hAugWind Speed: 9km/hSepWind Speed: 9km/hOctWind Speed: 9km/hNovWind Speed: 9km/hDecWind Speed: 9km/h
Wind Speed
0mph5mph10mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 5mphFebWind Speed: 6mphMarWind Speed: 5mphAprWind Speed: 5mphMayWind Speed: 5mphJunWind Speed: 5mphJulWind Speed: 5mphAugWind Speed: 6mphSepWind Speed: 6mphOctWind Speed: 6mphNovWind Speed: 6mphDecWind Speed: 6mph
Wind Speed

Grafton is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.Grafton is mildly breezy, with an average annual wind speed of 5mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is February, averaging 6mph, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 5mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1mph between the calmest and windiest months.

Best Time to Visit

Jan24°75°F
Feb24°74°F
Mar22°72°F
Apr19°67°F
May16°61°F
Jun13°56°F
Jul13°55°F
Aug14°58°F
Sep17°63°F
Oct19°67°F
Nov21°70°F
Dec23°74°F

The best time to visit Grafton is during April, May, September, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 69 mm per month. By contrast, January can be uncomfortably hot with highs reaching 29°C, while July is the coldest period with lows dropping to 8°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.The best time to visit Grafton is during April, May, September, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 66°F with modest rainfall averaging 2.7 in per month. By contrast, January can be uncomfortably hot with highs reaching 84°F, while July is the coldest period with lows dropping to 46°F. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

Monthly Climate Data

The table below shows monthly climate averages for Grafton based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Grafton based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
20 °C68 °F
29 °C84 °F
9 km/h5 mph
120 mm4.7 in
0 cm0 in
Feb
20 °C67 °F
28 °C83 °F
9 km/h6 mph
141 mm5.5 in
0 cm0 in
Mar
19 °C66 °F
27 °C80 °F
9 km/h5 mph
187 mm7.4 in
0 cm0 in
Apr
15 °C59 °F
25 °C76 °F
9 km/h5 mph
58 mm2.3 in
0 cm0 in
May
12 °C53 °F
22 °C72 °F
8 km/h5 mph
52 mm2 in
0 cm0 in
Jun
9 °C48 °F
20 °C67 °F
9 km/h5 mph
58 mm2.3 in
0 cm0 in
Jul
8 °C46 °F
20 °C67 °F
9 km/h5 mph
34 mm1.3 in
0 cm0 in
Aug
9 °C48 °F
21 °C70 °F
9 km/h6 mph
44 mm1.7 in
0 cm0 in
Sep
11 °C52 °F
24 °C75 °F
9 km/h6 mph
53 mm2.1 in
0 cm0 in
OctCurrent
15 °C58 °F
26 °C78 °F
9 km/h6 mph
92 mm3.6 in
0 cm0 in
Nov
17 °C62 °F
27 °C81 °F
9 km/h6 mph
89 mm3.5 in
0 cm0 in
Dec
19 °C66 °F
29 °C84 °F
9 km/h6 mph
115 mm4.5 in
0 cm0 in