Port Isabel, TX vs Phoenix, AZ

Side-by-side comparison of monthly climate normals (NOAA 1991-2020).

Port Isabel is about the same temperature as Phoenix (73.9°F vs 72.5°F annual avg) and wetter than it (28.8 in vs 8.9 in per year). Port Isabel has a Semi-arid (hot) climate; Phoenix a Desert (hot) climate.

Port Isabel, TX

Annual avg
73.9°F
Annual precip
28.8 in
Warmest month
August (92.1°F)
Coldest month
January (51.7°F)
Annual swing
24.2°F
Pleasant months
5 / 12
Semi-arid (hot) BSh USDA Zone 10b

Phoenix, AZ

Annual avg
72.5°F
Annual precip
8.9 in
Warmest month
July (104.0°F)
Coldest month
December (42.7°F)
Annual swing
39.1°F
Pleasant months
2 / 12
Desert (hot) BWh USDA Zone 9b

Best months to visit each city

Port Isabel

J
F
M
A
M
J
J
A
S
O
N
D

Phoenix

J
F
M
A
M
J
J
A
S
O
N
D

Month-by-month comparison

Month Port Isabel Phoenix
High Low Precip High Low Precip
January 68.9°F 51.7°F 1.45 in 65.4°F 44.1°F 1.17 in
February 72.2°F 56.3°F 1.22 in 68.1°F 46.1°F 1.21 in
March 75.7°F 61.2°F 1.68 in 75.0°F 50.9°F 1.09 in
April 80.8°F 67.0°F 1.59 in 82.5°F 56.6°F 0.35 in
May 86.1°F 72.7°F 2.36 in 91.5°F 64.7°F 0.19 in
June 90.1°F 76.3°F 3.06 in 101.5°F 72.7°F 0.03 in
July 91.0°F 77.0°F 2.27 in 104.0°F 80.8°F 0.81 in
August 92.1°F 77.0°F 1.93 in 102.5°F 80.5°F 0.96 in
September 88.5°F 73.9°F 6.15 in 97.5°F 74.7°F 0.71 in
October 85.1°F 69.0°F 3.86 in 86.3°F 62.7°F 0.67 in
November 77.5°F 60.7°F 1.77 in 74.0°F 50.8°F 0.90 in
December 70.5°F 53.6°F 1.41 in 63.9°F 42.7°F 0.81 in
Port Isabel overview
Full climate profile
 Phoenix overview
Full climate profile