Uddevalla Weather

[Michael Rosiles]

InUddevalla, the summers are comfortable and partly cloudy and the winters are long, freezing, snowy, and mostly cloudy. Over the course of the year, the temperature typically varies from 25F to 68F and is rarely below 9F or above 76F.

The warm season lasts for 3.2 months, from May 30 to September 7, with an average daily high temperature above 61F. The hottest month of the year in Uddevalla is July, with an average high of 67F and low of 53F.

The cold season lasts for 3.9 months, from November 21 to March 18, with an average daily high temperature below 40F. The coldest month of the year in Uddevalla is February, with an average low of 26F and high of 34F.

The wetter season lasts 8.0 months, from May 28 to January 27, with a greater than 31% chance of a given day being a wet day. The month with the most wet days in Uddevalla is October, with an average of 11.3 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Uddevalla is October, with an average of 11.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 38% on October 18.

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Uddevalla experiences some seasonal variation in monthly rainfall.

The snowy period of the year lasts for 5.0 months, from November 12 to April 11, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Uddevalla is January, with an average snowfall of 4.2 inches.

The length of the day in Uddevalla varies extremely over the course of the year. In 2024, the shortest day is December 21, with 6 hours, 22 minutes of daylight; the longest day is June 20, with 18 hours, 18 minutes of daylight.

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The perceived humidity level in Uddevalla, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The windier part of the year lasts for 6.4 months, from September 8 to March 20, with average wind speeds of more than 6.9 miles per hour. The windiest month of the year in Uddevalla is January, with an average hourly wind speed of 7.6 miles per hour.

The time of year with warmer water lasts for 3.0 months, from June 17 to September 17, with an average temperature above 58F. The month of the year in Uddevalla with the warmest water is August, with an average temperature of 63F.

The time of year with cooler water lasts for 3.9 months, from December 15 to April 12, with an average temperature below 42F. The month of the year in Uddevalla with the coolest water is February, with an average temperature of 37F.

The tourism score favors clear, rainless days with perceived temperatures between 65F and 80F. Based on this score, the best time of year to visit Uddevalla for general outdoor tourist activities is from late June to mid August, with a peak score in the third week of July.

The beach/pool score favors clear, rainless days with perceived temperatures between 75F and 90F. Based on this score, the best time of year to visit Uddevalla for hot-weather activities is from mid July to early August, with a peak score in the third week of July.

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

The growing season in Uddevalla typically lasts for 5.4 months (163 days), from around April 29 to around October 9, rarely starting before April 11 or after May 17, and rarely ending before September 19 or after November 4.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50F and a cap of 86F.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The brighter period of the year lasts for 3.2 months, from May 4 to August 10, with an average daily incident shortwave energy per square meter above 5.0 kWh. The brightest month of the year in Uddevalla is June, with an average of 6.2 kWh.

The darker period of the year lasts for 4.4 months, from October 16 to February 26, with an average daily incident shortwave energy per square meter below 1.4 kWh. The darkest month of the year in Uddevalla is December, with an average of 0.3 kWh.

The topography within 2 miles of Uddevalla contains only modest variations in elevation, with a maximum elevation change of 430 feet and an average elevation above sea level of 189 feet. Within 10 miles contains only modest variations in elevation (617 feet). Within 50 miles contains significant variations in elevation (942 feet).

For each station, the records are corrected for the elevation difference between that station and Uddevalla according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Uddevalla is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Uddevalla and a given station.

To get a sense of how much these sources agree with each other, you can view a comparison of Uddevalla and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

This data display current weather and forecast for the coming days in Uddevalla. In addition to temperature, wind, humidity and pressure, we include data on the probability of precipitation so you can have all the information about your destination before your trip

If you want to plan a vacation on the beach and enjoy the warm sea, choose the day of the year, region and the minimum comfortable sea/ocean temperature that interests you. As a result, you will get a list of countries and cities in which the average sea temperature or maximum temperature on this day over the past 10 years exceeds your chosen value

Our report for Uddevalla is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

Until noon it is mostly cloudy and after noon a mixture of sunshine and clouds with the possibility of local thunderstorms. The sun will not be visible. There is only a low chance of Precipitation (around 30%). Temperatures as high as 22 C are foreseen. At night and for the afternoon a gentle breeze is expected (12 to 20 km/h). In the morning blows a light breeze (7 to 12 km/h). Gusts to 37 km/h are possible. Winds blowing overnight from Southwest and by day from Northwest. The weather forecast for Uddevalla for Sunday can be accurate in parts but deviations are expected. Check again for latest updates.

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