When is the best time to go to Port Isabel
The chart above shows the best time of year to visit Port Isabel, 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 Port Isabel
Port Isabel weather by month
Please note our recommendations for when to visit Port Isabel 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 |
|---|---|---|---|---|
| 18°C | 41mm | 4.6hrs | 11.5hrs | 21°C |
Port Isabel's weather in January is typically mild and reasonably dry in nature.
Although outside the main holiday season, there is still plenty of quite acceptable weather around this time of year. This makes it a good time to visit Port Isabel.
January is in the winter in Port Isabel and is typically the coldest month of the year. Daytime maximum temperatures average around 20°C (69°F), whilst at night 10°C (50°F) is normal.
On average January is the driest month of the year in Port Isabel with around 41mm 1.6 inches of rain making it a reasonably dry 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 4.6 hours of sunshine per day.
Port Isabel weather in January »
February
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 20°C | 33mm | 5.8hrs | 12.1hrs | 20°C |
February in Port Isabel is generally reasonably dry with the temperature being mild.
It is perhaps a good month to visit Port Isabel, with some extremely good weather at this time of year.
February is in the winter in Port Isabel and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 11°C (53°F) is normal.
On average February is the 2nd driest month of the year in Port Isabel with around 33mm 1.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.8 hours of sunshine per day.
Port Isabel weather in February »
March
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 23°C | 21mm | 7hrs | 12.8hrs | 20°C |
The weather in March in Port Isabel is characteristically warm, humid and dry.
It is perhaps the perfect month to visit Port Isabel, with some surprisingly good weather at this time of year.
March is in the spring in Port Isabel and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a muggy 26°C (78°F), whilst at night 15°C (59°F) is normal.
On average March is the 3rd driest month of the year in Port Isabel with around 21mm 0.8 inches of rain making it a dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
Port Isabel weather in March »
April
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 26°C | 41mm | 8hrs | 13.5hrs | 22°C |
Port Isabel's weather in April is typically hot, humid and reasonably dry in nature.
It is perhaps the perfect month to visit Port Isabel, with some very good weather at this time of year.
April is in the spring in Port Isabel and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a muggy 29°C (84°F), whilst at night 19°C (67°F) is normal.
On average April is the 4th driest month of the year in Port Isabel with around 41mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.
On the flip side this corresponds to an average of 8 hours of sunshine per day.
Port Isabel weather in April »
May
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 28°C | 68mm | 8.9hrs | 14.2hrs | 25°C |
May is a reasonably dry, humid month in Port Isabel and the temperature is generally hot.
Based on weather alone, this is probably a time of year to avoid going to Port Isabel for your holidays. The weather is often not a good and not conducive to spending time outdoors.
May is in the spring in Port Isabel and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 22°C (72°F) is normal.
On average May is the 5th driest month of the year in Port Isabel with around 68mm 2.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.9 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 29°C | 79mm | 10.7hrs | 11.5hrs | 28°C |
June is a reasonably dry, humid month in Port Isabel and the temperature is generally very hot.
Based on weather alone, this is probably a time of year to avoid going to Port Isabel for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
June is in the summer in Port Isabel and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a steamy 33°C (91°F), whilst at night 24°C (75°F) is normal.
On average June is the 6th driest month of the year in Port Isabel with around 79mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.7 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 31°C | 47mm | 11.3hrs | 12.1hrs | 28°C |
July in Port Isabel is generally reasonably dry with the temperature being very hot.
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 Port Isabel.
July is in the summer in Port Isabel and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a steamy 34°C (93°F), whilst at night 24°C (76°F) is normal.
On average July is the 6th wettest month of the year in Port Isabel with around 47mm 1.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 11.3 hours of sunshine per day.
August
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 31°C | 66mm | 10.3hrs | 12.8hrs | 29°C |
The weather in August in Port Isabel is characteristically very hot, humid and reasonably dry.
Based on weather alone, this is probably a time of year to avoid going to Port Isabel for your holidays. The weather is often not a good and not conducive to spending time outdoors.
August is in the summer in Port Isabel and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a steamy 34°C (93°F), whilst at night 24°C (76°F) is normal.
On average August is the 5th wettest month of the year in Port Isabel with around 66mm 2.6 inches of rain making it a reasonably dry 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 10.3 hours of sunshine per day.
Port Isabel weather in August »
September
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 29°C | 144mm | 8.8hrs | 13.5hrs | 29°C |
Port Isabel's weather in September is typically hot, humid and wet in nature.
Based on weather alone, this is probably a time of year to avoid going to Port Isabel for your holidays. The weather is often not a good and not conducive to spending time outdoors.
September is in the fall / autumn in Port Isabel and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (90°F), whilst at night 23°C (73°F) is normal.
On average September is the 4th wettest month of the year in Port Isabel with around 144mm 5.7 inches of rain making it a wet 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 8.8 hours of sunshine per day.
Port Isabel weather in September »
October
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 27°C | 83mm | 7.8hrs | 14.2hrs | 27°C |
October is a a little damp, humid month in Port Isabel and the temperature is generally hot.
It is perhaps a good month to visit Port Isabel, with some surprisingly good weather at this time of year.
October is in the fall / autumn in Port Isabel and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 30°C (85°F), whilst at night 19°C (66°F) is normal.
On average October is the 3rd wettest month of the year in Port Isabel with around 83mm 3.2 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.8 hours of sunshine per day.
Port Isabel weather in October »
November
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 23°C | 40mm | 6hrs | 11.5hrs | 24°C |
November in Port Isabel is generally reasonably dry with the temperature being warm.
It is perhaps a good month to visit Port Isabel, with some particularly good weather at this time of year.
November is in the fall / autumn in Port Isabel and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (78°F), whilst at night 15°C (59°F) is normal.
On average November is the 2nd wettest month of the year in Port Isabel with around 40mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
Port Isabel weather in November »
December
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 20°C | 40mm | 4.6hrs | 12.1hrs | 22°C |
December in Port Isabel is generally reasonably dry with the temperature being mild.
It is perhaps a good month to visit Port Isabel, with some inordinately good weather at this time of year.
December is in the winter in Port Isabel and is typically the warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 11°C (52°F) is normal.
On average December is the wettest month of the year in Port Isabel with around 40mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.6 hours of sunshine per day.
Other monthly averages
Port Isabel weather stats
| Hottest month: | July | 33.7°C 92.7°F |
|---|---|---|
| Driest month: | March | 21mm 0.8ins |
| Sunniest month: | July | 11.3hrs |
| Coldest month: | January | 20.1°C 68.2°F |
| Wettest month: | September | 144mm 5.7ins |
| Warmest sea: | August | 28.8°C 83.8°F |
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