The best times to visit Surprise for ideal weather are
February 26th to April 29th
October 8th to December 9th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Surprise Travel Guide
Other Surprise Travel Info
Weather in Surprise
Average temperatures in Surprise vary drastically. Considering humidity, temperatures feel very nice much of the year, but hot in the summer and cold in the winter with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 50th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Surprise, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late June where highs are regularly around 108.6°F (42.6°C) with temperatures rarely dropping below 80.1°F (26.7°C) at night.
Surprise Temperatures (Fahrenheit)
Surprise Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Surprise Perceived Temperature (F)
Surprise Perceived Temperature (C)
Average Surprise Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Surprise are June, May, and then April. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid February. For example, on the week of February 12th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid to late August with an average of 1 days of significant precipitation the week of August 20th.
When can you find snow in Surprise? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Surprise.
Snow on the Ground
The graph below shows the average snow on the ground in Surprise (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Surprise has some comfortably humid months, with some extremely dry months. The least humid month is June (9.8% relative humidity), and the most humid month is December (43.8%).
Wind in Surprise is usually calm. The windiest month is July, followed by May and April. July’s average wind speed of around 6.8 knots (7.8 MPH or 12.6 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid July where average top sustained speeds reach 17.2 knots, which is considered a fresh breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Surprise.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||4.5||Light breeze||10.2||Gentle breeze|
|Feb||4.8||Light breeze||11||Significant breeze|
|Mar||5.3||Light breeze||12.6||Gentle breeze|
|Apr||6.7||Light breeze||14.6||Significant breeze|
|May||6.7||Light breeze||15||Gentle breeze|
|Jun||6.4||Light breeze||14.2||Significant breeze|
|Jul||6.8||Light breeze||16.3||Gentle breeze|
|Aug||6||Light breeze||15||Significant breeze|
|Sep||5.2||Light breeze||12.8||Gentle breeze|
|Oct||4.9||Light breeze||11.8||Significant breeze|
|Nov||4.4||Light breeze||10||Gentle breeze|
|Dec||4.1||Light breeze||9.9||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Surprise?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Surprise, AZ, US is February, followed by January and March. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Surprise in August. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Surprise Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 99.8°F (37.7°C) and 74.3°F (23.5°C) with warmer temperatures in the later months. Rain is rare with roughly 1 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have hot weather with high temperatures that are extremely hot. These months see the most precipitation with 0 to 3 days of precipitation per month. June – August is the slowest season for tourism in Surprise, so lodging and other accommodations may cost less than usual.
Fall (September through November)
Fall daily highs range from 103.1°F (39.5°C) and 71.1°F (21.7°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: approximately 1 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.
Winter (December through February)
Weather is too cold this time of year in Surprise to be enjoyable for warm weather travelers. The average high during this season is between 74.3°F (23.5°C) and 62.2°F (16.8°C). On average, it rains or snows a smalll amount: 1 to 2 times per month. These times of year are the busiest with tourists.
Best Times to Travel› the United States › Surprise, AZ, US