Where to go??

I would look into a large city, chances are everything will be open and there would be more inside sites in case of bad weather.
That said, we visited Rome one year during school’s February break. The weather was cool, not too cold. The city had less crowds but was not empty. It was a fun week.

I spent the period from mid-February to mid-March 2023 in Rome. It was coolish in the morning but warmed up a lot by the early afternoon. I think most visitors would be OK with the temperatures in general; by comparison, summer in much of Italy is often unpleasantly hot. Of course, weather can vary from year to year. What really bugged me was how short the days were, especially early in the trip; I'm someone who is lethargic in the winter. That seems not to be a problem for most other folks. (If you're like me, you know you have this issue.) Precipitation is more unpredictable than temperatures. I was happy to have a light, full-length raincoat I could wear on top of my fleece jacket on days that looked as if they could be quite wet. In actuality, I didn't run into very much rain.

To decide whether I'm likely to have acceptable weather at a particular destination, I use the website timeanddate.com. It provides actual, historical, day-by-day weather statistics for most potential tourist destination. I like to check the most recent five years, because there can be a lot of variation from one year to the next.

Rome weather -- April 2025 -- note that the temperature climbs throughout the morning and then drops rather quickly.

Use the pull-down box above the graph to see other months and years. Use the Search box at the upper right to change the location displayed.

To be sure I'm not likely to walk into a wall of rain, I look at the precipitation statistics in the Climate chart included in the Wikipedia entry for most cities.

Southern Spain (Seville/Cordoba/Granada/Malaga) is another area that would normally be pleasant, weather-wise, by the end of March. However, you'll be traveling during Holy Week, and Semana Santa is a very big deal in Andalucia. You'd certainly pay considerably higher hotel rates in some of the cities of southern Spain, most definitely including Seville. It can be difficult to make refundable hotel reservations, too. I was in the area during April 2019 and found the weather really good. I had to check on special operating hours for sightseeing attractions, but most were readily accessible during Holy Week. If you're OK with the extra cost and having a lot of fellow visitors and celebrants sharing the sidewalks with you, it is an interesting time to see that part of Spain.

In 2005, I went to Italy for two weeks in March and the weather was perfect. I never needed a coat nor did it rain. I started in the north and worked my way down to Sicily.

Go to Rome if thats what you want. You havent got much time so you might want to see where the fastest flights go from your hometown. That might be London for instance.

Easter is April 5. That will be a huge travel week for Italians, so book reserved seats for any train travel. And expect Rome to be crowded.

I totally forgot about Easter… Any and ALL ideas welcome! It doesn’t have to be Italy, but my husband has never been, so I thought that was best. Too cold for Amalfi Coast? French Riviera? Where else?

As always, Mr. E has great advice. Go to a place with a direct flight and stay there, maybe doing a day trip. If you can fly direct to Dublin, that's a good choice. You can stay in the city for a couple of days and then get a car and run up to the Giant's Causeway or go spend a couple of days in Belfast. I was there in mid-March this year, and it only rained once, very lightly. It was fairly cool, of course.

Don't let the holiday scare you. I was in Rome that year on Easter Sunday and you never would have known it was Easter.

I really don't think Easter 2005 should be used to predict conditions on Easter 2026. The world of travel has changed massively in the last twenty years.

That said, there's now a pre-booking option for St. Peter's in Rome that wasn't available until relatively recently, they've re-bid the ticketing function for the Colosseum so there's less funny business going on with the tickets, and the mobbed Vatican Museums are usually pretty awful at any time of year--so I don't have a reason to suspect Holy Week 2026 in Rome will be massively different from what I saw in Feb/Mar 2023. A lot of the sidewalks in central Rome were really crowded when I was there, but many of those folks were Italian; it's a large and densely-populated city. You're going to run into those conditions in many major European cities except during the months with seriously iffy weather (and I'm not sure Rome's weather ever qualifies as "iffy").

I imagine Holy Week will mean hotel rates higher than they will be one week earlier and one week later, but that's pretty much a given at that time of year, not limited to Rome. Many people head to Europe for spring break.

You will be on an international flight on Easter Sunday. That might be cheaper and less crowded. I flew Christmas day a few times because it was cheaper and less crowded. Also, a lot of countries have festivals or fairs leading up to Easter. Its a great time to be here for instance. April isn't a wet month in most of Central Europe if that helps. Tge wet months here are in early summer. But Italy having a Mediterranean climate is going to be different so look it up.

Or if you want to avoid Easter all together go to an orthodox country theirs is a week later.