Portugal and Spain are similar in terms of the best time to visit. With mild temperatures, fair weather and fewer crowds, spring (March to May) and fall (September to November) are generally the best times to visit both Spain and Portugal.

During the summer high season (June to August), the weather will be at its hottest, and popular destinations like major cities (Lisbon in Portugal and Barcelona in Spain) will be more crowded. The region's many beautiful beaches, especially along the Mediterranean Coast in Portugal's Algarve region and Spain's Andalucia, Valencia, Murcia and Catalonia regions, will also be busier. 

Even winter is a good time to visit both Spain and Portugal, as the winter season on the Iberian Peninsula is mild. Temperatures are usually in the 50s, with some rain and storms. But in general, it's still a pleasant time to travel. Rates will also usually be at their lowest for the tourism low season.

Switching hands between empires, religions and cultures for centuries, the Iberian Peninsula boasts a fascinating multicultural heritage and history, with each country telling its own story.

Unsurprisingly, seafood plays a major role in both Spanish and Portuguese cuisine. But each country approaches the dishes in their own way and also makes use of imported spices and other ingredients from their seafaring empire days to create globetrotting, multicultural dishes.

Both Spain and Portugal abound with natural beauty, and being on a peninsula, the beautiful coastline that wraps around both countries is a stand-out. As such, you can't visit Spain and Portugal without taking the time to explore their pristine beaches, dramatic cliffs and rocky coastlines. But venture inland and you'll find far more to discover, from river valleys to mountains. Offshore islands like the Azores in Portugal and Ibiza in Spain are also worth the trip, whether for partying it up in Ibiza or hiking around crater lakes in the Azores.

If you're after a budget vacation, both Spain and Portugal are good fits. Each country is affordable, especially if you visit during the shoulder season (spring or fall) or even during the winter low season. The summer high season (June to August) will be when both countries are at their most expensive, and the hot summer weather and crowded cities, beaches and tourist attractions can also be a deterrent. But in spring, fall and winter, you can find better rates on everything from flights to hotels.

To compare and contrast average prices, here's what you can expect to pay for everyday things like hotels, taxis, and meals in both Spain and Portugal:

●    Average cost per day: $164 (Spain) vs $149 (Portugal)
●    Accommodations: $109 (Spain) vs $99 (Portugal)
●    Taxi ride: Starting fare $3.82 (Spain) vs $3.55 (Portugal)
●    Casual meal: $10.91(Spain) vs $13 (Portugal)
●    Activities/Entertainment: $30 per day (Spain) vs $24 (Portugal)

With their warm, welcoming cultures and friendly residents, both Spain and Portugal are safe destinations for solo travel. With well-connected mass transit from buses to trains, it's also easy to get around on your own as well.

The laid back vibe and breezy culture of both countries are also perfect for family travel. The mix of outdoor adventure and cultural immersion offers something for everyone in the family, and the Spanish siesta is especially good for families with young ones who need naptime.

Whether solo, with family or traveling with your partner or friends, small-group travel gives you the best of both worlds. Instead of planning out your entire trip on your own, choose from a range of itineraries depending on your interest. Want a more wine-focused one? Opt for one of the food and wine tours. Prefer lots of time spent outdoors? Sign up for a walking or cycling adventure. Plus, not only are accommodations and transfers arranged for you, but you're accompanied by a guide who can help you learn even more about the countries you're visiting.