Port Isabel Weather Forecast 15 Days, Weather in Port Isabel Today
Current weather conditions and 15 day weather forecast for Port Isabel, Texas, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Port Isabel
| 01 May 2026 Friday 25.6 ° C / 78.1°F  Partly cloudy |
Feels Like : 28.5 ° C / 83.3°F Humidity : % 87 Pressure : 1007 mb Wind Speed : 20.9 kmph / 13 miles from SE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
15 day weather forecast for Port Isabel, TX, USA
Weather Forecast for next 15 Days for Port Isabel including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Port Isabel, Texas state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 01 May 2026 Friday |  Patchy rain nearby |
25 ° C (77°F) |
27 ° C (80.6°F) |
25.8 ° C (78.4°F) |
% 86 | 79% | 10.8 | Sunrise:06:51 AM Sunset: 08:01 PM |
Moonrise:08:18 PM Moonset: 06:30 AM Moon Phase ( Full Moon ) |
|
| 02 May 2026 Saturday |  Moderate rain |
19.1 ° C (66.3°F) |
20.8 ° C (69.5°F) |
20.4 ° C (68.6°F) |
% 81 | 90% | 5.1 | Sunrise:06:51 AM Sunset: 08:01 PM |
Moonrise:09:14 PM Moonset: 07:07 AM Moon Phase ( Waning Gibbous ) |
|
| 03 May 2026 Sunday | Patchy rain nearby |
21.3 ° C (70.3°F) |
24 ° C (75.3°F) |
22.8 ° C (73°F) |
% 63 | 89% | 8.8 | Sunrise:06:50 AM Sunset: 08:02 PM |
Moonrise:10:10 PM Moonset: 07:48 AM Moon Phase ( Waning Gibbous ) |
|
| 04 May 2026 Monday | Patchy rain nearby |
22.8 ° C (73°F) |
25.9 ° C (78.6°F) |
24.4 ° C (75.8°F) |
% 75 | 89% | 10.2 | Sunrise:06:49 AM Sunset: 08:02 PM |
Moonrise:11:04 PM Moonset: 08:33 AM Moon Phase ( Waning Gibbous ) |
|
| 05 May 2026 Tuesday | Partly Cloudy |
24.4 ° C (75.9°F) |
28.4 ° C (83.2°F) |
25.9 ° C (78.7°F) |
% 82 | 0% | 0 | Sunrise:06:48 AM Sunset: 08:03 PM |
Moonrise:11:55 PM Moonset: 09:23 AM Moon Phase ( Waning Gibbous ) |
|
| 06 May 2026 Wednesday | Partly Cloudy |
25.3 ° C (77.5°F) |
28.5 ° C (83.3°F) |
26.6 ° C (79.9°F) |
% 88 | 0% | 7 | Sunrise:06:48 AM Sunset: 08:03 PM |
Moonrise:No moonrise Moonset: 10:16 AM Moon Phase ( Waning Gibbous ) |
|
| 07 May 2026 Thursday | Patchy rain nearby |
25 ° C (77°F) |
26.4 ° C (79.5°F) |
25.7 ° C (78.3°F) |
% 88 | 89% | 6 | Sunrise:06:47 AM Sunset: 08:04 PM |
Moonrise:12:41 AM Moonset: 11:12 AM Moon Phase ( Waning Gibbous ) |
|
| 08 May 2026 Friday | Patchy rain nearby |
25 ° C (77°F) |
28.2 ° C (82.7°F) |
26.4 ° C (79.5°F) |
% 80 | 83% | 6 | Sunrise:06:46 AM Sunset: 08:04 PM |
Moonrise:01:23 AM Moonset: 12:09 PM Moon Phase ( Waning Gibbous ) |
|
| 09 May 2026 Saturday | Patchy rain nearby |
25.1 ° C (77.2°F) |
29 ° C (84.3°F) |
26.9 ° C (80.5°F) |
% 83 | 89% | 6 | Sunrise:06:46 AM Sunset: 08:05 PM |
Moonrise:02:00 AM Moonset: 01:06 PM Moon Phase ( Last Quarter ) |
|
| 10 May 2026 Sunday | Patchy rain nearby |
25.9 ° C (78.5°F) |
29.3 ° C (84.8°F) |
27.2 ° C (81°F) |
% 81 | 87% | 6 | Sunrise:06:45 AM Sunset: 08:05 PM |
Moonrise:02:34 AM Moonset: 02:02 PM Moon Phase ( Waning Crescent ) |
|
| 11 May 2026 Monday |  Sunny |
25.4 ° C (77.6°F) |
28.3 ° C (82.9°F) |
26.7 ° C (80.1°F) |
% 82 | 0% | 7 | Sunrise:06:44 AM Sunset: 08:06 PM |
Moonrise:03:07 AM Moonset: 02:59 PM Moon Phase ( Waning Crescent ) |
|
| 12 May 2026 Tuesday | Sunny |
25.6 ° C (78.1°F) |
28.6 ° C (83.5°F) |
26.9 ° C (80.4°F) |
% 81 | 0% | 7 | Sunrise:06:44 AM Sunset: 08:06 PM |
Moonrise:03:39 AM Moonset: 03:58 PM Moon Phase ( Waning Crescent ) |
|
| 13 May 2026 Wednesday | Sunny |
25.7 ° C (78.3°F) |
28.7 ° C (83.7°F) |
27 ° C (80.6°F) |
% 83 | 0% | 7 | Sunrise:06:43 AM Sunset: 08:07 PM |
Moonrise:04:11 AM Moonset: 04:59 PM Moon Phase ( Waning Crescent ) |
|
| 14 May 2026 Thursday | Sunny |
25.8 ° C (78.4°F) |
28.9 ° C (84.1°F) |
27.2 ° C (80.9°F) |
% 84 | 0% | 7 | Sunrise:06:43 AM Sunset: 08:07 PM |
Moonrise:04:47 AM Moonset: 06:04 PM Moon Phase ( Waning Crescent ) |
|
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