When is the best time to go to Islip
The chart above shows the best time of year to visit Islip, United States. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in Islip
Islip weather by month
Please note our recommendations for when to visit Islip are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 3°C | 92mm | 6hrs | 10.6hrs | 7°C |
Cold and a little damp weather often prevails in Islip during the month of January
Based on weather alone, this is probably a time of year to avoid going to Islip for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
January is in the winter in Islip and is typically the coldest month of the year. Daytime maximum temperatures average around a freezing 3°C (38°F), whilst at night -5°C (23°F) is normal.
On average January is the driest month of the year in Islip with around 92mm 3.6 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
February
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 4°C | 85mm | 6.8hrs | 11.6hrs | 5°C |
February in Islip is generally a little damp with the temperature being cool.
Based on weather alone, this is probably a time of year to avoid going to Islip for your holidays. The weather is often not a good and not conducive to spending time outdoors.
February is in the winter in Islip and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cold 4°C (40°F), whilst at night -4°C (24°F) is normal.
On average February is the 2nd driest month of the year in Islip with around 85mm 3.3 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.8 hours of sunshine per day.
March
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 8°C | 106mm | 7.8hrs | 12.8hrs | 5°C |
The weather in March in Islip is characteristically cool and damp.
Based on weather alone, this is probably a time of year to avoid going to Islip for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
March is in the spring in Islip and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 9°C (49°F), whilst at night -0°C (32°F) is normal.
On average March is the 3rd driest month of the year in Islip with around 106mm 4.2 inches of rain making it a damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.8 hours of sunshine per day.
April
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 13°C | 104mm | 8.5hrs | 14.2hrs | 7°C |
Islip's weather in April is typically cool and damp in nature.
Based on weather alone, this is probably a time of year to avoid going to Islip for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
April is in the spring in Islip and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 15°C (59°F), whilst at night 4°C (40°F) is normal.
On average April is the 4th driest month of the year in Islip with around 104mm 4.1 inches of rain making it a damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.5 hours of sunshine per day.
May
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 18°C | 100mm | 9hrs | 15.4hrs | 11°C |
May is a damp month in Islip and the temperature is generally mild.
Although outside the main holiday season, there is still plenty of relatively acceptable weather around this time of year. This makes it an okay time to visit Islip.
May is in the spring in Islip and is typically the 5th coldest month of the year. Daytime maximum temperatures average around 20°C (69°F), whilst at night 10°C (49°F) is normal.
On average May is the 5th driest month of the year in Islip with around 100mm 3.9 inches of rain making it a damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 9 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 23°C | 89mm | 9.5hrs | 10.6hrs | 17°C |
Warm, humid and a little damp weather often prevails in Islip during the month of June
It is perhaps the perfect month to visit Islip, with some inordinately good weather at this time of year.
June is in the summer in Islip and is typically the 6th coldest month of the year. Daytime maximum temperatures average around 25°C (77°F), whilst at night 15°C (59°F) is normal.
On average June is the 6th driest month of the year in Islip with around 89mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.5 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 25°C | 91mm | 9.4hrs | 11.6hrs | 22°C |
July in Islip is generally a little damp with the temperature being hot.
It is perhaps the perfect month to visit Islip, with some inordinately good weather at this time of year.
July is in the summer in Islip and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (82°F), whilst at night 18°C (65°F) is normal.
On average July is the 6th wettest month of the year in Islip with around 91mm 3.6 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.4 hours of sunshine per day.
August
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 25°C | 100mm | 9.1hrs | 12.8hrs | 23°C |
The weather in August in Islip is characteristically warm, humid and a little damp.
It is perhaps the perfect month to visit Islip, with some extremely good weather at this time of year.
August is in the summer in Islip and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (81°F), whilst at night 18°C (65°F) is normal.
On average August is the 5th wettest month of the year in Islip with around 100mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.1 hours of sunshine per day.
September
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 21°C | 89mm | 8hrs | 14.2hrs | 21°C |
Islip's weather in September is typically warm and a little damp in nature.
It is perhaps the perfect month to visit Islip, with some inordinately good weather at this time of year.
September is in the fall / autumn in Islip and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 24°C (75°F), whilst at night 14°C (58°F) is normal.
On average September is the 4th wettest month of the year in Islip with around 89mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 8 hours of sunshine per day.
October
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 16°C | 88mm | 7.5hrs | 15.4hrs | 17°C |
October is a a little damp month in Islip and the temperature is generally mild.
It is perhaps a good month to visit Islip, with some extremely good weather at this time of year.
October is in the fall / autumn in Islip and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 18°C (65°F), whilst at night 9°C (47°F) is normal.
On average October is the 3rd wettest month of the year in Islip with around 88mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.5 hours of sunshine per day.
November
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 11°C | 106mm | 5.6hrs | 10.6hrs | 13°C |
Cool and damp weather often prevails in Islip during the month of November
Based on weather alone, this is probably a time of year to avoid going to Islip for your holidays. The weather is often not a good and not conducive to spending time outdoors.
November is in the fall / autumn in Islip and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a cool 12°C (54°F), whilst at night 4°C (39°F) is normal.
On average November is the 2nd wettest month of the year in Islip with around 106mm 4.2 inches of rain making it a damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.6 hours of sunshine per day.
December
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 6°C | 105mm | 5.1hrs | 11.6hrs | 10°C |
December in Islip is generally damp with the temperature being cool.
Based on weather alone, this is probably a time of year to avoid going to Islip for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
December is in the winter in Islip and is typically the warmest month of the year. Daytime maximum temperatures average around a cold 6°C (43°F), whilst at night -2°C (29°F) is normal.
On average December is the wettest month of the year in Islip with around 105mm 4.1 inches of rain making it a damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.1 hours of sunshine per day.
Other monthly averages
Islip weather stats
| Hottest month: | July | 27.8°C 82°F |
|---|---|---|
| Driest month: | February | 85mm 3.3ins |
| Sunniest month: | August | 9.1hrs |
| Coldest month: | January | 3.2°C 37.8°F |
| Wettest month: | March | 106mm 4.2ins |
| Warmest sea: | August | 22.8°C 73°F |
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